23890042 has 8 divisors (see below), whose sum is σ = 39092832. Its totient is φ = 10859100.

The previous prime is 23890039. The next prime is 23890063. The reversal of 23890042 is 24009832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542934 + ... + 542977.

It is an arithmetic number, because the mean of its divisors is an integer number (4886604).

Almost surely, 2^23890042 is an apocalyptic number.

23890042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23890042 is a deficient number, since it is larger than the sum of its proper divisors (15202790).

23890042 is a wasteful number, since it uses less digits than its factorization.

23890042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085924.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 23890042 is about 4887.7440604025. The cubic root of 23890042 is about 288.0087204793.

Adding to 23890042 its reverse (24009832), we get a palindrome (47899874).

The spelling of 23890042 in words is "twenty-three million, eight hundred ninety thousand, forty-two".