23522142 has 32 divisors (see below), whose sum is σ = 54784512. Its totient is φ = 6593184.

The previous prime is 23522129. The next prime is 23522143. The reversal of 23522142 is 24122532.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23522143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3058 + ... + 7509.

It is an arithmetic number, because the mean of its divisors is an integer number (1712016).

Almost surely, 2^23522142 is an apocalyptic number.

23522142 is an abundant number, since it is smaller than the sum of its proper divisors (31262370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23522142 is a wasteful number, since it uses less digits than its factorization.

23522142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632.

The product of its digits is 960, while the sum is 21.

The square root of 23522142 is about 4849.9630926431. The cubic root of 23522142 is about 286.5226477472.

Adding to 23522142 its reverse (24122532), we get a palindrome (47644674).

The spelling of 23522142 in words is "twenty-three million, five hundred twenty-two thousand, one hundred forty-two".