202421234043 has 24 divisors (see below), whose sum is σ = 334333909728. Its totient is φ = 115607584512.

The previous prime is 202421234039. The next prime is 202421234047. The reversal of 202421234043 is 340432124202.

202421234043 is a `hidden beast` number, since 2 + 0 + 2 + 421 + 234 + 0 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (202421234039) and next prime (202421234047).

It is not a de Polignac number, because 202421234043 - 2² = 202421234039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202421233998 and 202421234016.

It is not an unprimeable number, because it can be changed into a prime (202421234047) 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 23 ways as a sum of consecutive naturals, for example, 737646 + ... + 974147.

It is an arithmetic number, because the mean of its divisors is an integer number (13930579572).

Almost surely, 2^202421234043 is an apocalyptic number.

202421234043 is a deficient number, since it is larger than the sum of its proper divisors (131912675685).

202421234043 is a wasteful number, since it uses less digits than its factorization.

202421234043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713683 (or 1713680 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 202421234043 its reverse (340432124202), we get a palindrome (542853358245).

The spelling of 202421234043 in words is "two hundred two billion, four hundred twenty-one million, two hundred thirty-four thousand, forty-three".