421542242524 has 36 divisors (see below), whose sum is σ = 833540981616. Its totient is φ = 186098909568.

The previous prime is 421542242479. The next prime is 421542242531. The reversal of 421542242524 is 425242245124.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13540609 + ... + 13571704.

It is an arithmetic number, because the mean of its divisors is an integer number (23153916156).

Almost surely, 2^421542242524 is an apocalyptic number.

It is an amenable number.

421542242524 is a deficient number, since it is larger than the sum of its proper divisors (411998739092).

421542242524 is a wasteful number, since it uses less digits than its factorization.

421542242524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27112366 (or 27112351 counting only the distinct ones).

The product of its digits is 204800, while the sum is 37.

Adding to 421542242524 its reverse (425242245124), we get a palindrome (846784487648).

The spelling of 421542242524 in words is "four hundred twenty-one billion, five hundred forty-two million, two hundred forty-two thousand, five hundred twenty-four".