104100520 has 32 divisors (see below), whose sum is σ = 248005800. Its totient is φ = 39190528.

The previous prime is 104100481. The next prime is 104100547. The reversal of 104100520 is 25001401.

It can be written as a sum of positive squares in 4 ways, for example, as 102373924 + 1726596 = 10118^2 + 1314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 104100520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75865 + ... + 77224.

Almost surely, 2^104100520 is an apocalyptic number.

104100520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104100520 is an abundant number, since it is smaller than the sum of its proper divisors (143905280).

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

104100520 is a wasteful number, since it uses less digits than its factorization.

104100520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153117 (or 153113 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 104100520 is about 10202.9662353651. The cubic root of 104100520 is about 470.4183991176.

Adding to 104100520 its reverse (25001401), we get a palindrome (129101921).

The spelling of 104100520 in words is "one hundred four million, one hundred thousand, five hundred twenty".