123153155 has 32 divisors (see below), whose sum is σ = 163814400. Its totient is φ = 88463232.

The previous prime is 123153143. The next prime is 123153157. The reversal of 123153155 is 551351321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123153155 - 2⁴ = 123153139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123153157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342866 + ... + 343224.

It is an arithmetic number, because the mean of its divisors is an integer number (5119200).

Almost surely, 2^123153155 is an apocalyptic number.

123153155 is a deficient number, since it is larger than the sum of its proper divisors (40661245).

123153155 is a wasteful number, since it uses less digits than its factorization.

123153155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its digits is 2250, while the sum is 26.

The square root of 123153155 is about 11097.4391190040. The cubic root of 123153155 is about 497.5253120460.

The spelling of 123153155 in words is "one hundred twenty-three million, one hundred fifty-three thousand, one hundred fifty-five".