123039402 has 32 divisors (see below), whose sum is σ = 267969600. Its totient is φ = 37513728.

The previous prime is 123039391. The next prime is 123039437. The reversal of 123039402 is 204930321.

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, 15303 + ... + 21914.

It is an arithmetic number, because the mean of its divisors is an integer number (8374050).

Almost surely, 2^123039402 is an apocalyptic number.

123039402 is an abundant number, since it is smaller than the sum of its proper divisors (144930198).

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

123039402 is a wasteful number, since it uses less digits than its factorization.

123039402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37270.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 123039402 is about 11092.3127435175. The cubic root of 123039402 is about 497.3720816210.

Adding to 123039402 its reverse (204930321), we get a palindrome (327969723).

The spelling of 123039402 in words is "one hundred twenty-three million, thirty-nine thousand, four hundred two".