20202545142 has 48 divisors (see below), whose sum is σ = 48142261440. Its totient is φ = 6083905536.

The previous prime is 20202545137. The next prime is 20202545149. The reversal of 20202545142 is 24154520202.

20202545142 is a `hidden beast` number, since 2 + 0 + 202 + 5 + 451 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202545149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 907467 + ... + 929462.

It is an arithmetic number, because the mean of its divisors is an integer number (1002963780).

Almost surely, 2^20202545142 is an apocalyptic number.

20202545142 is an abundant number, since it is smaller than the sum of its proper divisors (27939716298).

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

20202545142 is a wasteful number, since it uses less digits than its factorization.

20202545142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836997 (or 1836994 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 20202545142 in words is "twenty billion, two hundred two million, five hundred forty-five thousand, one hundred forty-two".