123625138 has 48 divisors (see below), whose sum is σ = 242464320. Its totient is φ = 46769184.

The previous prime is 123625133. The next prime is 123625141. The reversal of 123625138 is 831526321.

It is not an unprimeable number, because it can be changed into a prime (123625133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27193 + ... + 31411.

It is an arithmetic number, because the mean of its divisors is an integer number (5051340).

Almost surely, 2^123625138 is an apocalyptic number.

123625138 is a deficient number, since it is larger than the sum of its proper divisors (118839182).

123625138 is a wasteful number, since it uses less digits than its factorization.

123625138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271 (or 4264 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 123625138 is about 11118.6841847406. The cubic root of 123625138 is about 498.1600884222.

The spelling of 123625138 in words is "one hundred twenty-three million, six hundred twenty-five thousand, one hundred thirty-eight".