20202140142 has 24 divisors (see below), whose sum is σ = 44222558016. Its totient is φ = 6664622976.

The previous prime is 20202140107. The next prime is 20202140201. The reversal of 20202140142 is 24104120202.

20202140142 is a `hidden beast` number, since 20 + 202 + 1 + 401 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5783518 + ... + 5787009.

It is an arithmetic number, because the mean of its divisors is an integer number (1842606584).

Almost surely, 2^20202140142 is an apocalyptic number.

20202140142 is an abundant number, since it is smaller than the sum of its proper divisors (24020417874).

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

20202140142 is a wasteful number, since it uses less digits than its factorization.

20202140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11570632 (or 11570629 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20202140142 its reverse (24104120202), we get a palindrome (44306260344).

The spelling of 20202140142 in words is "twenty billion, two hundred two million, one hundred forty thousand, one hundred forty-two".