202421242 has 4 divisors (see below), whose sum is σ = 303631866. Its totient is φ = 101210620.

The previous prime is 202421239. The next prime is 202421267. The reversal of 202421242 is 242124202.

202421242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 194017041 + 8404201 = 13929^2 + 2899^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605309 + ... + 50605312.

Almost surely, 2^202421242 is an apocalyptic number.

202421242 is a deficient number, since it is larger than the sum of its proper divisors (101210624).

202421242 is a wasteful number, since it uses less digits than its factorization.

202421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101210623.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 202421242 is about 14227.4819275935. The cubic root of 202421242 is about 587.1540061440.

Adding to 202421242 its reverse (242124202), we get a palindrome (444545444).

The spelling of 202421242 in words is "two hundred two million, four hundred twenty-one thousand, two hundred forty-two".