124905402 has 28 divisors (see below), whose sum is σ = 280911930. Its totient is φ = 41634648.

The previous prime is 124905371. The next prime is 124905413. The reversal of 124905402 is 204509421.

It can be written as a sum of positive squares in only one way, i.e., 106936281 + 17969121 = 10341^2 + 4239^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 41377 + ... + 44292.

Almost surely, 2^124905402 is an apocalyptic number.

124905402 is an abundant number, since it is smaller than the sum of its proper divisors (156006528).

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

124905402 is an frugal number, since it uses more digits than its factorization.

124905402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85689 (or 85674 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 124905402 is about 11176.1085356219. The cubic root of 124905402 is about 499.8738375021.

The spelling of 124905402 in words is "one hundred twenty-four million, nine hundred five thousand, four hundred two".