123292138 has 8 divisors (see below), whose sum is σ = 185144832. Its totient is φ = 61577196.

The previous prime is 123292129. The next prime is 123292181. The reversal of 123292138 is 831292321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123292138² = 30401902585222088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32170 + ... + 35797.

It is an arithmetic number, because the mean of its divisors is an integer number (23143104).

Almost surely, 2^123292138 is an apocalyptic number.

123292138 is a deficient number, since it is larger than the sum of its proper divisors (61852694).

123292138 is an equidigital number, since it uses as much as digits as its factorization.

123292138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68876.

The product of its digits is 5184, while the sum is 31.

The square root of 123292138 is about 11103.6992934787. The cubic root of 123292138 is about 497.7124004045.

The spelling of 123292138 in words is "one hundred twenty-three million, two hundred ninety-two thousand, one hundred thirty-eight".