420322700 has 72 divisors (see below), whose sum is σ = 1087763712. Its totient is φ = 137839680.

The previous prime is 420322697. The next prime is 420322717. The reversal of 420322700 is 7223024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3047 + ... + 29153.

Almost surely, 2^420322700 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 420322700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543881856).

420322700 is an abundant number, since it is smaller than the sum of its proper divisors (667441012).

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

420322700 is a wasteful number, since it uses less digits than its factorization.

420322700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26151 (or 26144 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 420322700 is about 20501.7730940521. The cubic root of 420322700 is about 749.0789879639.

Adding to 420322700 its reverse (7223024), we get a palindrome (427545724).

The spelling of 420322700 in words is "four hundred twenty million, three hundred twenty-two thousand, seven hundred".