123939259 has 2 divisors, whose sum is σ = 123939260. Its totient is φ = 123939258.

The previous prime is 123939253. The next prime is 123939317. The reversal of 123939259 is 952939321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123939259 - 2¹⁵ = 123906491 is a prime.

It is not a weakly prime, because it can be changed into another prime (123939253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61969629 + 61969630.

It is an arithmetic number, because the mean of its divisors is an integer number (61969630).

Almost surely, 2^123939259 is an apocalyptic number.

123939259 is a deficient number, since it is larger than the sum of its proper divisors (1).

123939259 is an equidigital number, since it uses as much as digits as its factorization.

123939259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 43.

The square root of 123939259 is about 11132.8010401695. The cubic root of 123939259 is about 498.5816590891.

The spelling of 123939259 in words is "one hundred twenty-three million, nine hundred thirty-nine thousand, two hundred fifty-nine".