202432233421 has 4 divisors (see below), whose sum is σ = 220835163744. Its totient is φ = 184029303100.

The previous prime is 202432233401. The next prime is 202432233481. The reversal of 202432233421 is 124332234202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202432233421 - 2⁹ = 202432232909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202432233421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202432233401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9201465145 + ... + 9201465166.

It is an arithmetic number, because the mean of its divisors is an integer number (55208790936).

Almost surely, 2^202432233421 is an apocalyptic number.

It is an amenable number.

202432233421 is a deficient number, since it is larger than the sum of its proper divisors (18402930323).

202432233421 is a wasteful number, since it uses less digits than its factorization.

202432233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18402930322.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 202432233421 its reverse (124332234202), we get a palindrome (326764467623).

The spelling of 202432233421 in words is "two hundred two billion, four hundred thirty-two million, two hundred thirty-three thousand, four hundred twenty-one".