23142242 has 16 divisors (see below), whose sum is σ = 35811960. Its totient is φ = 11207808.

The previous prime is 23142239. The next prime is 23142277. The reversal of 23142242 is 24224132.

It can be written as a sum of positive squares in 4 ways, for example, as 16008001 + 7134241 = 4001^2 + 2671^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19934 + ... + 21062.

Almost surely, 2^23142242 is an apocalyptic number.

23142242 is a deficient number, since it is larger than the sum of its proper divisors (12669718).

23142242 is a wasteful number, since it uses less digits than its factorization.

23142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

The product of its digits is 768, while the sum is 20.

The square root of 23142242 is about 4810.6384191706. The cubic root of 23142242 is about 284.9717505600.

Adding to 23142242 its reverse (24224132), we get a palindrome (47366374).

The spelling of 23142242 in words is "twenty-three million, one hundred forty-two thousand, two hundred forty-two".