23820042 has 32 divisors (see below), whose sum is σ = 50232960. Its totient is φ = 7515200.

The previous prime is 23820037. The next prime is 23820079. The reversal of 23820042 is 24002832.

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, 13084 + ... + 14792.

It is an arithmetic number, because the mean of its divisors is an integer number (1569780).

Almost surely, 2^23820042 is an apocalyptic number.

23820042 is an abundant number, since it is smaller than the sum of its proper divisors (26412918).

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

23820042 is a wasteful number, since it uses less digits than its factorization.

23820042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 23820042 is about 4880.5780395359. The cubic root of 23820042 is about 287.7271480238.

Adding to 23820042 its reverse (24002832), we get a palindrome (47822874).

The spelling of 23820042 in words is "twenty-three million, eight hundred twenty thousand, forty-two".