23942505 has 16 divisors (see below), whose sum is σ = 39124224. Its totient is φ = 12497280.

The previous prime is 23942491. The next prime is 23942521. The reversal of 23942505 is 50524932.

It is not a de Polignac number, because 23942505 - 2¹⁴ = 23926121 is a prime.

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, 16276 + ... + 17685.

It is an arithmetic number, because the mean of its divisors is an integer number (2445264).

Almost surely, 2^23942505 is an apocalyptic number.

It is an amenable number.

23942505 is a deficient number, since it is larger than the sum of its proper divisors (15181719).

23942505 is a wasteful number, since it uses less digits than its factorization.

23942505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34016.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 23942505 is about 4893.1079080682. The cubic root of 23942505 is about 288.2193906057.

The spelling of 23942505 in words is "twenty-three million, nine hundred forty-two thousand, five hundred five".