20312444142 has 16 divisors (see below), whose sum is σ = 45138764880. Its totient is φ = 6770814696.

The previous prime is 20312444129. The next prime is 20312444167. The reversal of 20312444142 is 24144421302.

20312444142 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 244 + 414 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 188078133 + ... + 188078240.

It is an arithmetic number, because the mean of its divisors is an integer number (2821172805).

Almost surely, 2^20312444142 is an apocalyptic number.

20312444142 is an abundant number, since it is smaller than the sum of its proper divisors (24826320738).

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

20312444142 is a wasteful number, since it uses less digits than its factorization.

20312444142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376156384 (or 376156378 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20312444142 its reverse (24144421302), we get a palindrome (44456865444).

The spelling of 20312444142 in words is "twenty billion, three hundred twelve million, four hundred forty-four thousand, one hundred forty-two".