421655712 has 48 divisors (see below), whose sum is σ = 1108451232. Its totient is φ = 140348160.

The previous prime is 421655699. The next prime is 421655719. The reversal of 421655712 is 217556124.

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

It is not an unprimeable number, because it can be changed into a prime (421655719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72762 + ... + 78342.

It is an arithmetic number, because the mean of its divisors is an integer number (23092734).

Almost surely, 2^421655712 is an apocalyptic number.

It is an amenable number.

421655712 is an abundant number, since it is smaller than the sum of its proper divisors (686795520).

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

421655712 is a wasteful number, since it uses less digits than its factorization.

421655712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381 (or 6373 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 421655712 is about 20534.2570355005. The cubic root of 421655712 is about 749.8700290336.

The spelling of 421655712 in words is "four hundred twenty-one million, six hundred fifty-five thousand, seven hundred twelve".