421524468 has 18 divisors (see below), whose sum is σ = 1065520274. Its totient is φ = 140508144.

The previous prime is 421524449. The next prime is 421524479. The reversal of 421524468 is 864425124.

421524468 is a `hidden beast` number, since 42 + 152 + 4 + 468 = 666.

It can be written as a sum of positive squares in only one way, i.e., 420332004 + 1192464 = 20502^2 + 1092^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11709013 = 421524468 / (4 + 2 + 1 + 5 + 2 + 4 + 4 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5854471 + ... + 5854542.

Almost surely, 2^421524468 is an apocalyptic number.

It is an amenable number.

421524468 is an abundant number, since it is smaller than the sum of its proper divisors (643995806).

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

421524468 is a wasteful number, since it uses less digits than its factorization.

421524468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11709023 (or 11709018 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 421524468 is about 20531.0610539251. The cubic root of 421524468 is about 749.7922197752.

The spelling of 421524468 in words is "four hundred twenty-one million, five hundred twenty-four thousand, four hundred sixty-eight".