421748920 has 64 divisors (see below), whose sum is σ = 1019861280. Its totient is φ = 156389376.

The previous prime is 421748917. The next prime is 421748927. The reversal of 421748920 is 29847124.

It is a self number, because there is not a number n which added to its sum of digits gives 421748920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421748927) 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, 40932 + ... + 50188.

Almost surely, 2^421748920 is an apocalyptic number.

421748920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421748920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509930640).

421748920 is an abundant number, since it is smaller than the sum of its proper divisors (598112360).

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

421748920 is a wasteful number, since it uses less digits than its factorization.

421748920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352 (or 9348 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 421748920 is about 20536.5264833175. The cubic root of 421748920 is about 749.9252784818.

The spelling of 421748920 in words is "four hundred twenty-one million, seven hundred forty-eight thousand, nine hundred twenty".