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105142080 = 2635313533
BaseRepresentation
bin1100100010001…
…01011101000000
321022211202211010
412101011131000
5203404021310
614233320520
72414456451
oct621053500
9238752733
10105142080
115439388a
122b266140
1318a24164
14dd6d128
15936d320
hex6445740

105142080 has 112 divisors (see below), whose sum is σ = 344692224. Its totient is φ = 27125760.

The previous prime is 105142073. The next prime is 105142099. The reversal of 105142080 is 80241501.

It is a super-2 number, since 2×1051420802 = 22109713973452800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27994 + ... + 31526.

Almost surely, 2105142080 is an apocalyptic number.

105142080 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 105142080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172346112).

105142080 is an abundant number, since it is smaller than the sum of its proper divisors (239550144).

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

105142080 is a wasteful number, since it uses less digits than its factorization.

105142080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 105142080 is about 10253.8812163980. The cubic root of 105142080 is about 471.9820925888.

Adding to 105142080 its reverse (80241501), we get a palindrome (185383581).

The spelling of 105142080 in words is "one hundred five million, one hundred forty-two thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 64 80 93 96 120 124 155 160 186 192 240 248 310 320 372 465 480 496 620 744 930 960 992 1240 1488 1860 1984 2480 2976 3533 3720 4960 5952 7066 7440 9920 10599 14132 14880 17665 21198 28264 29760 35330 42396 52995 56528 70660 84792 105990 109523 113056 141320 169584 211980 219046 226112 282640 328569 339168 423960 438092 547615 565280 657138 678336 847920 876184 1095230 1130560 1314276 1642845 1695840 1752368 2190460 2628552 3285690 3391680 3504736 4380920 5257104 6571380 7009472 8761840 10514208 13142760 17523680 21028416 26285520 35047360 52571040 105142080