202421043 has 48 divisors (see below), whose sum is σ = 332513376. Its totient is φ = 117573120.

The previous prime is 202421039. The next prime is 202421077. The reversal of 202421043 is 340124202.

202421043 is a `hidden beast` number, since 202 + 421 + 0 + 43 = 666.

It is not a de Polignac number, because 202421043 - 2² = 202421039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202421083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 267021 + ... + 267777.

It is an arithmetic number, because the mean of its divisors is an integer number (6927362).

Almost surely, 2^202421043 is an apocalyptic number.

202421043 is a deficient number, since it is larger than the sum of its proper divisors (130092333).

202421043 is a wasteful number, since it uses less digits than its factorization.

202421043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 202421043 is about 14227.4749340844. The cubic root of 202421043 is about 587.1538137339.

Adding to 202421043 its reverse (340124202), we get a palindrome (542545245).

The spelling of 202421043 in words is "two hundred two million, four hundred twenty-one thousand, forty-three".