23021142 has 16 divisors (see below), whose sum is σ = 46326720. Its totient is φ = 7626312.

The previous prime is 23021101. The next prime is 23021147. The reversal of 23021142 is 24112032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10792 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (2895420).

Almost surely, 2^23021142 is an apocalyptic number.

23021142 is an abundant number, since it is smaller than the sum of its proper divisors (23305578).

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

23021142 is a wasteful number, since it uses less digits than its factorization.

23021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23707.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 23021142 is about 4798.0352228803. The cubic root of 23021142 is about 284.4738090322.

Adding to 23021142 its reverse (24112032), we get a palindrome (47133174).

The spelling of 23021142 in words is "twenty-three million, twenty-one thousand, one hundred forty-two".