420612630 has 32 divisors (see below), whose sum is σ = 1010534400. Its totient is φ = 112045152.

The previous prime is 420612617. The next prime is 420612631. The reversal of 420612630 is 36216024.

It is a self number, because there is not a number n which added to its sum of digits gives 420612630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420612631) 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, 23691 + ... + 37449.

It is an arithmetic number, because the mean of its divisors is an integer number (31579200).

Almost surely, 2^420612630 is an apocalyptic number.

420612630 is an abundant number, since it is smaller than the sum of its proper divisors (589921770).

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

420612630 is a wasteful number, since it uses less digits than its factorization.

420612630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14788.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 420612630 is about 20508.8427269800. The cubic root of 420612630 is about 749.2511814988.

Adding to 420612630 its reverse (36216024), we get a palindrome (456828654).

It can be divided in two parts, 4206 and 12630, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 420612630 in words is "four hundred twenty million, six hundred twelve thousand, six hundred thirty".