420214621 has 8 divisors (see below), whose sum is σ = 443210400. Its totient is φ = 397306800.

The previous prime is 420214609. The next prime is 420214631. The reversal of 420214621 is 126412024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420214621 - 2¹³ = 420206429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420214592 and 420214601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420214631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12055 + ... + 31396.

It is an arithmetic number, because the mean of its divisors is an integer number (55401300).

Almost surely, 2^420214621 is an apocalyptic number.

It is an amenable number.

420214621 is a deficient number, since it is larger than the sum of its proper divisors (22995779).

420214621 is a wasteful number, since it uses less digits than its factorization.

420214621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43979.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 420214621 is about 20499.1370793992. The cubic root of 420214621 is about 749.0147780540.

Adding to 420214621 its reverse (126412024), we get a palindrome (546626645).

The spelling of 420214621 in words is "four hundred twenty million, two hundred fourteen thousand, six hundred twenty-one".