421641740530 has 32 divisors (see below), whose sum is σ = 760932869760. Its totient is φ = 168217378560.

The previous prime is 421641740519. The next prime is 421641740543. The reversal of 421641740530 is 35047146124.

It is a self number, because there is not a number n which added to its sum of digits gives 421641740530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27147627 + ... + 27163153.

It is an arithmetic number, because the mean of its divisors is an integer number (23779152180).

Almost surely, 2^421641740530 is an apocalyptic number.

421641740530 is a deficient number, since it is larger than the sum of its proper divisors (339291129230).

421641740530 is a wasteful number, since it uses less digits than its factorization.

421641740530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22434.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 421641740530 its reverse (35047146124), we get a palindrome (456688886654).

The spelling of 421641740530 in words is "four hundred twenty-one billion, six hundred forty-one million, seven hundred forty thousand, five hundred thirty".