421245004530 has 64 divisors (see below), whose sum is σ = 1156014332928. Its totient is φ = 96234617280.

The previous prime is 421245004517. The next prime is 421245004549. The reversal of 421245004530 is 35400542124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113892 + ... + 924911.

It is an arithmetic number, because the mean of its divisors is an integer number (18062723952).

Almost surely, 2^421245004530 is an apocalyptic number.

421245004530 is an abundant number, since it is smaller than the sum of its proper divisors (734769328398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421245004530 is a wasteful number, since it uses less digits than its factorization.

421245004530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040751.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 421245004530 its reverse (35400542124), we get a palindrome (456645546654).

The spelling of 421245004530 in words is "four hundred twenty-one billion, two hundred forty-five million, four thousand, five hundred thirty".