202243132542 has 32 divisors (see below), whose sum is σ = 443497659264. Its totient is φ = 60974698400.

The previous prime is 202243132457. The next prime is 202243132549. The reversal of 202243132542 is 245231342202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202243132549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7764384 + ... + 7790387.

It is an arithmetic number, because the mean of its divisors is an integer number (13859301852).

Almost surely, 2^202243132542 is an apocalyptic number.

202243132542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202243132542 is an abundant number, since it is smaller than the sum of its proper divisors (241254526722).

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

202243132542 is a wasteful number, since it uses less digits than its factorization.

202243132542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15554984.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 202243132542 its reverse (245231342202), we get a palindrome (447474474744).

The spelling of 202243132542 in words is "two hundred two billion, two hundred forty-three million, one hundred thirty-two thousand, five hundred forty-two".