123149974 has 4 divisors (see below), whose sum is σ = 184724964. Its totient is φ = 61574986.

The previous prime is 123149947. The next prime is 123149987. The reversal of 123149974 is 479941321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30787492 + ... + 30787495.

It is an arithmetic number, because the mean of its divisors is an integer number (46181241).

Almost surely, 2^123149974 is an apocalyptic number.

123149974 is a deficient number, since it is larger than the sum of its proper divisors (61574990).

123149974 is an equidigital number, since it uses as much as digits as its factorization.

123149974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61574989.

The product of its digits is 54432, while the sum is 40.

The square root of 123149974 is about 11097.2957967245. The cubic root of 123149974 is about 497.5210283781.

The spelling of 123149974 in words is "one hundred twenty-three million, one hundred forty-nine thousand, nine hundred seventy-four".