123901239 has 32 divisors (see below), whose sum is σ = 209479680. Its totient is φ = 63266400.

The previous prime is 123901213. The next prime is 123901247. The reversal of 123901239 is 932109321.

It is a happy number.

It is not a de Polignac number, because 123901239 - 2⁷ = 123901111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123901249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9084 + ... + 18174.

It is an arithmetic number, because the mean of its divisors is an integer number (6546240).

Almost surely, 2^123901239 is an apocalyptic number.

123901239 is a deficient number, since it is larger than the sum of its proper divisors (85578441).

123901239 is a wasteful number, since it uses less digits than its factorization.

123901239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 123901239 is about 11131.0933425248. The cubic root of 123901239 is about 498.5306717117.

The spelling of 123901239 in words is "one hundred twenty-three million, nine hundred one thousand, two hundred thirty-nine".