20012042 has 12 divisors (see below), whose sum is σ = 30855510. Its totient is φ = 9734256.

The previous prime is 20012023. The next prime is 20012053. The reversal of 20012042 is 24021002.

It can be written as a sum of positive squares in 3 ways, for example, as 19989841 + 22201 = 4471^2 + 149^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 917 + ... + 6392.

Almost surely, 2^20012042 is an apocalyptic number.

20012042 is a deficient number, since it is larger than the sum of its proper divisors (10843468).

20012042 is an equidigital number, since it uses as much as digits as its factorization.

20012042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385 (or 7348 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20012042 is about 4473.4820889325. The cubic root of 20012042 is about 271.4962290909.

Adding to 20012042 its reverse (24021002), we get a palindrome (44033044).

The spelling of 20012042 in words is "twenty million, twelve thousand, forty-two".