123388953 has 16 divisors (see below), whose sum is σ = 167057280. Its totient is φ = 80999424.

The previous prime is 123388943. The next prime is 123388961. The reversal of 123388953 is 359883321.

It is not a de Polignac number, because 123388953 - 2⁸ = 123388697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123388943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58603 + ... + 60671.

It is an arithmetic number, because the mean of its divisors is an integer number (10441080).

Almost surely, 2^123388953 is an apocalyptic number.

It is an amenable number.

123388953 is a deficient number, since it is larger than the sum of its proper divisors (43668327).

123388953 is a wasteful number, since it uses less digits than its factorization.

123388953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its digits is 155520, while the sum is 42.

The square root of 123388953 is about 11108.0580210944. The cubic root of 123388953 is about 497.8426423368.

The spelling of 123388953 in words is "one hundred twenty-three million, three hundred eighty-eight thousand, nine hundred fifty-three".