20042612 has 12 divisors (see below), whose sum is σ = 35203140. Its totient is φ = 9984576.

The previous prime is 20042597. The next prime is 20042621. The reversal of 20042612 is 21624002.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 8726116 = 3364^2 + 2954^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7937 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (2933595).

Almost surely, 2^20042612 is an apocalyptic number.

It is an amenable number.

20042612 is a deficient number, since it is larger than the sum of its proper divisors (15160528).

20042612 is a wasteful number, since it uses less digits than its factorization.

20042612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18370 (or 18368 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20042612 is about 4476.8975864989. The cubic root of 20042612 is about 271.6344028496.

Adding to 20042612 its reverse (21624002), we get a palindrome (41666614).

The spelling of 20042612 in words is "twenty million, forty-two thousand, six hundred twelve".