421497880 has 32 divisors (see below), whose sum is σ = 968552640. Its totient is φ = 165011200.

The previous prime is 421497863. The next prime is 421497889. The reversal of 421497880 is 88794124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421497889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110221 + ... + 113980.

It is an arithmetic number, because the mean of its divisors is an integer number (30267270).

Almost surely, 2^421497880 is an apocalyptic number.

421497880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421497880 is an abundant number, since it is smaller than the sum of its proper divisors (547054760).

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

421497880 is a wasteful number, since it uses less digits than its factorization.

421497880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224259 (or 224255 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 421497880 is about 20530.4135369943. The cubic root of 421497880 is about 749.7764548582.

The spelling of 421497880 in words is "four hundred twenty-one million, four hundred ninety-seven thousand, eight hundred eighty".