420221434443052 has 96 divisors (see below), whose sum is σ = 811745722368000. Its totient is φ = 188755855448640.

The previous prime is 420221434443007. The next prime is 420221434443101. The reversal of 420221434443052 is 250344434122024.

It is a junction number, because it is equal to n+sod(n) for n = 420221434442996 and 420221434443014.

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, 5996360949 + ... + 5996431027.

It is an arithmetic number, because the mean of its divisors is an integer number (8455684608000).

Almost surely, 2^{420221434443052} is an apocalyptic number.

It is an amenable number.

420221434443052 is a deficient number, since it is larger than the sum of its proper divisors (391524287924948).

420221434443052 is a wasteful number, since it uses less digits than its factorization.

420221434443052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73339 (or 73337 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 40.

Adding to 420221434443052 its reverse (250344434122024), we get a palindrome (670565868565076).

The spelling of 420221434443052 in words is "four hundred twenty trillion, two hundred twenty-one billion, four hundred thirty-four million, four hundred forty-three thousand, fifty-two".