421827144 has 16 divisors (see below), whose sum is σ = 1054567920. Its totient is φ = 140609040.

The previous prime is 421827143. The next prime is 421827149. The reversal of 421827144 is 441728124.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (421827143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8788042 + ... + 8788089.

It is an arithmetic number, because the mean of its divisors is an integer number (65910495).

Almost surely, 2^421827144 is an apocalyptic number.

It is an amenable number.

421827144 is an abundant number, since it is smaller than the sum of its proper divisors (632740776).

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

421827144 is a wasteful number, since it uses less digits than its factorization.

421827144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17576140 (or 17576136 counting only the distinct ones).

The product of its digits is 14336, while the sum is 33.

The square root of 421827144 is about 20538.4309040394. The cubic root of 421827144 is about 749.9716398165.

The spelling of 421827144 in words is "four hundred twenty-one million, eight hundred twenty-seven thousand, one hundred forty-four".