23442021 has 16 divisors (see below), whose sum is σ = 34968000. Its totient is φ = 15520464.

The previous prime is 23442007. The next prime is 23442061. The reversal of 23442021 is 12024432.

It is not a de Polignac number, because 23442021 - 2⁵ = 23441989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23441985 and 23442003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23442061) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1110 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (2185500).

Almost surely, 2^23442021 is an apocalyptic number.

It is an amenable number.

23442021 is a deficient number, since it is larger than the sum of its proper divisors (11525979).

23442021 is a wasteful number, since it uses less digits than its factorization.

23442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985 (or 5979 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 23442021 is about 4841.6960871166. The cubic root of 23442021 is about 286.1969603552.

Adding to 23442021 its reverse (12024432), we get a palindrome (35466453).

The spelling of 23442021 in words is "twenty-three million, four hundred forty-two thousand, twenty-one".