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121416460 = 225111931937
BaseRepresentation
bin1110011110010…
…10101100001100
322110110121001221
413033022230030
5222040311320
620014213124
73003010564
oct717125414
9273417057
10121416460
1162599a90
12347b41a4
131c201879
14121a7da4
15a9d53aa
hex73cab0c

121416460 has 96 divisors (see below), whose sum is σ = 302561280. Its totient is φ = 40435200.

The previous prime is 121416437. The next prime is 121416469. The reversal of 121416460 is 64614121.

It is not an unprimeable number, because it can be changed into a prime (121416469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129112 + ... + 130048.

It is an arithmetic number, because the mean of its divisors is an integer number (3151680).

Almost surely, 2121416460 is an apocalyptic number.

121416460 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 121416460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151280640).

121416460 is an abundant number, since it is smaller than the sum of its proper divisors (181144820).

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

121416460 is a wasteful number, since it uses less digits than its factorization.

121416460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 121416460 is about 11018.9137395662. The cubic root of 121416460 is about 495.1755456687.

The spelling of 121416460 in words is "one hundred twenty-one million, four hundred sixteen thousand, four hundred sixty".

Divisors: 1 2 4 5 10 11 19 20 22 31 38 44 55 62 76 95 110 124 155 190 209 220 310 341 380 418 589 620 682 836 937 1045 1178 1364 1705 1874 2090 2356 2945 3410 3748 4180 4685 5890 6479 6820 9370 10307 11780 12958 17803 18740 20614 25916 29047 32395 35606 41228 51535 58094 64790 71212 89015 103070 116188 129580 145235 178030 195833 206140 290470 319517 356060 391666 551893 580940 639034 783332 979165 1103786 1278068 1597585 1958330 2207572 2759465 3195170 3916660 5518930 6070823 6390340 11037860 12141646 24283292 30354115 60708230 121416460