202421244434 has 16 divisors (see below), whose sum is σ = 305318515320. Its totient is φ = 100648796160.

The previous prime is 202421244413. The next prime is 202421244451. The reversal of 202421244434 is 434442124202.

It can be written as a sum of positive squares in 4 ways, for example, as 202322738809 + 98505625 = 449803^2 + 9925^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202421244434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957314 + ... + 1149474.

Almost surely, 2^202421244434 is an apocalyptic number.

202421244434 is a deficient number, since it is larger than the sum of its proper divisors (102897270886).

202421244434 is a wasteful number, since it uses less digits than its factorization.

202421244434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195085.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 202421244434 its reverse (434442124202), we get a palindrome (636863368636).

The spelling of 202421244434 in words is "two hundred two billion, four hundred twenty-one million, two hundred forty-four thousand, four hundred thirty-four".