123117152 has 24 divisors (see below), whose sum is σ = 242635176. Its totient is φ = 61495552.

The previous prime is 123117143. The next prime is 123117157. The reversal of 123117152 is 251711321.

It is a super-2 number, since 2×123117152² = 30315666233182208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123117157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56108 + ... + 58260.

It is an arithmetic number, because the mean of its divisors is an integer number (10109799).

Almost surely, 2^123117152 is an apocalyptic number.

It is an amenable number.

123117152 is a deficient number, since it is larger than the sum of its proper divisors (119518024).

123117152 is a wasteful number, since it uses less digits than its factorization.

123117152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950 (or 3942 counting only the distinct ones).

The product of its digits is 420, while the sum is 23.

The square root of 123117152 is about 11095.8168694333. The cubic root of 123117152 is about 497.4768245898.

Adding to 123117152 its reverse (251711321), we get a palindrome (374828473).

The spelling of 123117152 in words is "one hundred twenty-three million, one hundred seventeen thousand, one hundred fifty-two".