202540242 has 16 divisors (see below), whose sum is σ = 412724160. Its totient is φ = 66239472.

The previous prime is 202540213. The next prime is 202540259. The reversal of 202540242 is 242045202.

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, 318142 + ... + 318777.

It is an arithmetic number, because the mean of its divisors is an integer number (25795260).

Almost surely, 2^202540242 is an apocalyptic number.

202540242 is an abundant number, since it is smaller than the sum of its proper divisors (210183918).

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

202540242 is a wasteful number, since it uses less digits than its factorization.

202540242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636977.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 202540242 is about 14231.6633602682. The cubic root of 202540242 is about 587.2690428837.

Adding to 202540242 its reverse (242045202), we get a palindrome (444585444).

The spelling of 202540242 in words is "two hundred two million, five hundred forty thousand, two hundred forty-two".