23556142 has 4 divisors (see below), whose sum is σ = 35334216. Its totient is φ = 11778070.

The previous prime is 23556139. The next prime is 23556173. The reversal of 23556142 is 24165532.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×23556142³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23556142.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5889034 + ... + 5889037.

It is an arithmetic number, because the mean of its divisors is an integer number (8833554).

Almost surely, 2^23556142 is an apocalyptic number.

23556142 is a deficient number, since it is larger than the sum of its proper divisors (11778074).

23556142 is a wasteful number, since it uses less digits than its factorization.

23556142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11778073.

The product of its digits is 7200, while the sum is 28.

The square root of 23556142 is about 4853.4670082324. The cubic root of 23556142 is about 286.6606323470.

The spelling of 23556142 in words is "twenty-three million, five hundred fifty-six thousand, one hundred forty-two".