420110621 has 16 divisors (see below), whose sum is σ = 495175680. Its totient is φ = 348981360.

The previous prime is 420110597. The next prime is 420110623. The reversal of 420110621 is 126011024.

It is not a de Polignac number, because 420110621 - 2²² = 415916317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420110621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420110623) 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, 22160 + ... + 36486.

It is an arithmetic number, because the mean of its divisors is an integer number (30948480).

Almost surely, 2^420110621 is an apocalyptic number.

It is an amenable number.

420110621 is a deficient number, since it is larger than the sum of its proper divisors (75065059).

420110621 is a wasteful number, since it uses less digits than its factorization.

420110621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14464.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 420110621 is about 20496.6002302821. The cubic root of 420110621 is about 748.9529810894.

Adding to 420110621 its reverse (126011024), we get a palindrome (546121645).

The spelling of 420110621 in words is "four hundred twenty million, one hundred ten thousand, six hundred twenty-one".