20936142 has 12 divisors (see below), whose sum is σ = 45361680. Its totient is φ = 6978708.

The previous prime is 20936137. The next prime is 20936171. The reversal of 20936142 is 24163902.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 581542 + ... + 581577.

It is an arithmetic number, because the mean of its divisors is an integer number (3780140).

Almost surely, 2^20936142 is an apocalyptic number.

20936142 is an abundant number, since it is smaller than the sum of its proper divisors (24425538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20936142 is a wasteful number, since it uses less digits than its factorization.

20936142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163127 (or 1163124 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20936142 is about 4575.6029110927. The cubic root of 20936142 is about 275.6124838903.

The spelling of 20936142 in words is "twenty million, nine hundred thirty-six thousand, one hundred forty-two".