202421312 has 28 divisors (see below), whose sum is σ = 425310300. Its totient is φ = 95256576.

The previous prime is 202421309. The next prime is 202421353. The reversal of 202421312 is 213124202.

It can be written as a sum of positive squares in 2 ways, for example, as 99520576 + 102900736 = 9976^2 + 10144^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91937 + ... + 94112.

Almost surely, 2^202421312 is an apocalyptic number.

It is an amenable number.

202421312 is an abundant number, since it is smaller than the sum of its proper divisors (222888988).

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

202421312 is a wasteful number, since it uses less digits than its factorization.

202421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186078 (or 186068 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 202421312 is about 14227.4843876210. The cubic root of 202421312 is about 587.1540738260.

Adding to 202421312 its reverse (213124202), we get a palindrome (415545514).

The spelling of 202421312 in words is "two hundred two million, four hundred twenty-one thousand, three hundred twelve".