421739560 has 32 divisors (see below), whose sum is σ = 1035180000. Its totient is φ = 153359680.

The previous prime is 421739501. The next prime is 421739597. The reversal of 421739560 is 65937124.

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, 478810 + ... + 479689.

It is an arithmetic number, because the mean of its divisors is an integer number (32349375).

Almost surely, 2^421739560 is an apocalyptic number.

421739560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421739560 is an abundant number, since it is smaller than the sum of its proper divisors (613440440).

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

421739560 is a wasteful number, since it uses less digits than its factorization.

421739560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958521 (or 958517 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 421739560 is about 20536.2985954139. The cubic root of 421739560 is about 749.9197306687.

The spelling of 421739560 in words is "four hundred twenty-one million, seven hundred thirty-nine thousand, five hundred sixty".