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10128450942 = 232562691719
BaseRepresentation
bin10010110111011001…
…11110010101111110
3222010212110121200200
421123230332111332
5131220340412232
64353011504330
7505664261331
oct113354762576
928125417620
1010128450942
114328279115
121b67bb80a6
13c554b2b4c
146c123c618
153e42d277c
hex25bb3e57e

10128450942 has 12 divisors (see below), whose sum is σ = 21944977080. Its totient is φ = 3376150308.

The previous prime is 10128450923. The next prime is 10128450971. The reversal of 10128450942 is 24905482101.

10128450942 is a `hidden beast` number, since 101 + 2 + 8 + 4 + 509 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 10128450897 and 10128450906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281345842 + ... + 281345877.

It is an arithmetic number, because the mean of its divisors is an integer number (1828748090).

Almost surely, 210128450942 is an apocalyptic number.

10128450942 is an abundant number, since it is smaller than the sum of its proper divisors (11816526138).

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

10128450942 is a wasteful number, since it uses less digits than its factorization.

10128450942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562691727 (or 562691724 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 10128450942 in words is "ten billion, one hundred twenty-eight million, four hundred fifty thousand, nine hundred forty-two".

Divisors: 1 2 3 6 9 18 562691719 1125383438 1688075157 3376150314 5064225471 10128450942