202113112542 has 48 divisors (see below), whose sum is σ = 446570497296. Its totient is φ = 60935459200.

The previous prime is 202113112529. The next prime is 202113112589. The reversal of 202113112542 is 245211311202.

It is a happy number.

It is a super-2 number, since 2×202113112542² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 563559 + ... + 849602.

It is an arithmetic number, because the mean of its divisors is an integer number (9303552027).

Almost surely, 2^202113112542 is an apocalyptic number.

202113112542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202113112542 is an abundant number, since it is smaller than the sum of its proper divisors (244457384754).

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

202113112542 is a wasteful number, since it uses less digits than its factorization.

202113112542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413385 (or 1413374 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 202113112542 its reverse (245211311202), we get a palindrome (447324423744).

The spelling of 202113112542 in words is "two hundred two billion, one hundred thirteen million, one hundred twelve thousand, five hundred forty-two".