421357560 has 192 divisors, whose sum is σ = 1391385600. Its totient is φ = 102016512.

The previous prime is 421357513. The next prime is 421357577. The reversal of 421357560 is 65753124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1601989 + ... + 1602251.

It is an arithmetic number, because the mean of its divisors is an integer number (7246800).

Almost surely, 2^421357560 is an apocalyptic number.

421357560 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 421357560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695692800).

421357560 is an abundant number, since it is smaller than the sum of its proper divisors (970028040).

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

421357560 is a wasteful number, since it uses less digits than its factorization.

421357560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 421357560 is about 20526.9958834701. The cubic root of 421357560 is about 749.6932434399.

The spelling of 421357560 in words is "four hundred twenty-one million, three hundred fifty-seven thousand, five hundred sixty".