421025856 has 112 divisors (see below), whose sum is σ = 1180575744. Its totient is φ = 132143616.

The previous prime is 421025851. The next prime is 421025863. The reversal of 421025856 is 658520124.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (421025851) 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, 295161 + ... + 296583.

Almost surely, 2^421025856 is an apocalyptic number.

421025856 is a gapful number since it is divisible by the number (46) 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 421025856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590287872).

421025856 is an abundant number, since it is smaller than the sum of its proper divisors (759549888).

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

421025856 is a wasteful number, since it uses less digits than its factorization.

421025856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 421025856 is about 20518.9145911766. The cubic root of 421025856 is about 749.4964655686.

The spelling of 421025856 in words is "four hundred twenty-one million, twenty-five thousand, eight hundred fifty-six".