202421120434 has 16 divisors (see below), whose sum is σ = 327288826368. Its totient is φ = 93339171792.

The previous prime is 202421120423. The next prime is 202421120449. The reversal of 202421120434 is 434021124202.

It is a junction number, because it is equal to n+sod(n) for n = 202421120399 and 202421120408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3552892 + ... + 3609415.

It is an arithmetic number, because the mean of its divisors is an integer number (20455551648).

Almost surely, 2^202421120434 is an apocalyptic number.

202421120434 is a deficient number, since it is larger than the sum of its proper divisors (124867705934).

202421120434 is a wasteful number, since it uses less digits than its factorization.

202421120434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7163409.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 202421120434 its reverse (434021124202), we get a palindrome (636442244636).

The spelling of 202421120434 in words is "two hundred two billion, four hundred twenty-one million, one hundred twenty thousand, four hundred thirty-four".