202120042430 has 16 divisors (see below), whose sum is σ = 382964291280. Its totient is φ = 76592858112.

The previous prime is 202120042393. The next prime is 202120042433. The reversal of 202120042430 is 34240021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120042433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531894659 + ... + 531895038.

It is an arithmetic number, because the mean of its divisors is an integer number (23935268205).

Almost surely, 2^202120042430 is an apocalyptic number.

202120042430 is a deficient number, since it is larger than the sum of its proper divisors (180844248850).

202120042430 is a wasteful number, since it uses less digits than its factorization.

202120042430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063789723.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 202120042430 its reverse (34240021202), we get a palindrome (236360063632).

The spelling of 202120042430 in words is "two hundred two billion, one hundred twenty million, forty-two thousand, four hundred thirty".