20042012 has 24 divisors (see below), whose sum is σ = 36261120. Its totient is φ = 9685440.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042012 is 21024002.

It is a junction number, because it is equal to n+sod(n) for n = 20041984 and 20042002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27914 + ... + 28622.

It is an arithmetic number, because the mean of its divisors is an integer number (1510880).

Almost surely, 2^20042012 is an apocalyptic number.

It is an amenable number.

20042012 is a deficient number, since it is larger than the sum of its proper divisors (16219108).

20042012 is a wasteful number, since it uses less digits than its factorization.

20042012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

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

The square root of 20042012 is about 4476.8305753066. The cubic root of 20042012 is about 271.6316922536.

Adding to 20042012 its reverse (21024002), we get a palindrome (41066014).

The spelling of 20042012 in words is "twenty million, forty-two thousand, twelve".