420644700 has 216 divisors, whose sum is σ = 1572899328. Its totient is φ = 91935360.

The previous prime is 420644669. The next prime is 420644711. The reversal of 420644700 is 7446024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 143449 + ... + 146351.

Almost surely, 2^420644700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420644700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786449664).

420644700 is an abundant number, since it is smaller than the sum of its proper divisors (1152254628).

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

420644700 is a wasteful number, since it uses less digits than its factorization.

420644700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2943 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 420644700 is about 20509.6245699428. The cubic root of 420644700 is about 749.2702234653.

It can be divided in two parts, 42064 and 4700, that added together give a palindrome (46764).

The spelling of 420644700 in words is "four hundred twenty million, six hundred forty-four thousand, seven hundred".