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121418080 = 2557217911
BaseRepresentation
bin1110011110010…
…11000101100000
322110110200021221
413033023011200
5222040334310
620014224424
73003015400
oct717130540
9273420257
10121418080
11625a0223
12347b5114
131c202524
14121a8800
15a9d5ada
hex73cb160

121418080 has 144 divisors (see below), whose sum is σ = 353699136. Its totient is φ = 39137280.

The previous prime is 121418069. The next prime is 121418117. The reversal of 121418080 is 80814121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132825 + ... + 133735.

It is an arithmetic number, because the mean of its divisors is an integer number (2456244).

Almost surely, 2121418080 is an apocalyptic number.

121418080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121418080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176849568).

121418080 is an abundant number, since it is smaller than the sum of its proper divisors (232281056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121418080 is a wasteful number, since it uses less digits than its factorization.

121418080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 121418080 is about 11018.9872492893. The cubic root of 121418080 is about 495.1777479533.

The spelling of 121418080 in words is "one hundred twenty-one million, four hundred eighteen thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 40 49 56 68 70 80 85 98 112 119 136 140 160 170 196 224 238 245 272 280 340 392 476 490 544 560 595 680 784 833 911 952 980 1120 1190 1360 1568 1666 1822 1904 1960 2380 2720 3332 3644 3808 3920 4165 4555 4760 6377 6664 7288 7840 8330 9110 9520 12754 13328 14576 15487 16660 18220 19040 25508 26656 29152 30974 31885 33320 36440 44639 51016 61948 63770 66640 72880 77435 89278 102032 108409 123896 127540 133280 145760 154870 178556 204064 216818 223195 247792 255080 309740 357112 433636 446390 495584 510160 542045 619480 714224 758863 867272 892780 1020320 1084090 1238960 1428448 1517726 1734544 1785560 2168180 2477920 3035452 3469088 3571120 3794315 4336360 6070904 7142240 7588630 8672720 12141808 15177260 17345440 24283616 30354520 60709040 121418080