123939256 has 16 divisors (see below), whose sum is σ = 265584240. Its totient is φ = 53116800.

The previous prime is 123939253. The next prime is 123939259. The reversal of 123939256 is 652939321.

It is an interprime number because it is at equal distance from previous prime (123939253) and next prime (123939259).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123939253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106545 + ... + 1106656.

It is an arithmetic number, because the mean of its divisors is an integer number (16599015).

Almost surely, 2^123939256 is an apocalyptic number.

It is an amenable number.

123939256 is an abundant number, since it is smaller than the sum of its proper divisors (141644984).

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

123939256 is a wasteful number, since it uses less digits than its factorization.

123939256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213214 (or 2213210 counting only the distinct ones).

The product of its digits is 87480, while the sum is 40.

The square root of 123939256 is about 11132.8009054326. The cubic root of 123939256 is about 498.5816550663.

The spelling of 123939256 in words is "one hundred twenty-three million, nine hundred thirty-nine thousand, two hundred fifty-six".