420630413621 has 16 divisors (see below), whose sum is σ = 470092267008. Its totient is φ = 373040236800.

The previous prime is 420630413591. The next prime is 420630413629. The reversal of 420630413621 is 126314036024.

It is not a de Polignac number, because 420630413621 - 2¹⁴ = 420630397237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420630413629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13680161 + ... + 13710873.

It is an arithmetic number, because the mean of its divisors is an integer number (29380766688).

Almost surely, 2^420630413621 is an apocalyptic number.

420630413621 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

420630413621 is a deficient number, since it is larger than the sum of its proper divisors (49461853387).

420630413621 is a wasteful number, since it uses less digits than its factorization.

420630413621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61132.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 420630413621 its reverse (126314036024), we get a palindrome (546944449645).

The spelling of 420630413621 in words is "four hundred twenty billion, six hundred thirty million, four hundred thirteen thousand, six hundred twenty-one".