23042155 has 16 divisors (see below), whose sum is σ = 29606400. Its totient is φ = 17163360.

The previous prime is 23042141. The next prime is 23042161. The reversal of 23042155 is 55124032.

It is not a de Polignac number, because 23042155 - 2⁹ = 23041643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3550 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (1850400).

Almost surely, 2^23042155 is an apocalyptic number.

23042155 is a deficient number, since it is larger than the sum of its proper divisors (6564245).

23042155 is a wasteful number, since it uses less digits than its factorization.

23042155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23042155 is about 4800.2244739179. The cubic root of 23042155 is about 284.5603357320.

Adding to 23042155 its reverse (55124032), we get a palindrome (78166187).

The spelling of 23042155 in words is "twenty-three million, forty-two thousand, one hundred fifty-five".