421014145024520 has 32 divisors (see below), whose sum is σ = 947288672587800. Its totient is φ = 168404440892928.

The previous prime is 421014145024477. The next prime is 421014145024633. The reversal of 421014145024520 is 25420541410124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 417714378315844 + 3299766708676 = 20438062^2 + 1816526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32420915 + ... + 43510274.

Almost surely, 2^{421014145024520} is an apocalyptic number.

421014145024520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421014145024520 is an abundant number, since it is smaller than the sum of its proper divisors (526274527563280).

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

421014145024520 is a wasteful number, since it uses less digits than its factorization.

421014145024520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76069817 (or 76069813 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 421014145024520 its reverse (25420541410124), we get a palindrome (446434686434644).

The spelling of 421014145024520 in words is "four hundred twenty-one trillion, fourteen billion, one hundred forty-five million, twenty-four thousand, five hundred twenty".