421007712 has 48 divisors (see below), whose sum is σ = 1107135792. Its totient is φ = 140083200.

The previous prime is 421007701. The next prime is 421007731. The reversal of 421007712 is 217700124.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54048 + ... + 61344.

It is an arithmetic number, because the mean of its divisors is an integer number (23065329).

Almost surely, 2^421007712 is an apocalyptic number.

It is an amenable number.

421007712 is an abundant number, since it is smaller than the sum of its proper divisors (686128080).

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

421007712 is a wasteful number, since it uses less digits than its factorization.

421007712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911 (or 7903 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 421007712 is about 20518.4724577635. The cubic root of 421007712 is about 749.4856989621.

Adding to 421007712 its reverse (217700124), we get a palindrome (638707836).

The spelling of 421007712 in words is "four hundred twenty-one million, seven thousand, seven hundred twelve".