421239168 has 96 divisors (see below), whose sum is σ = 1385351760. Its totient is φ = 120351744.

The previous prime is 421239167. The next prime is 421239197. The reversal of 421239168 is 861932124.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421239167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18055 + ... + 34182.

Almost surely, 2^421239168 is an apocalyptic number.

421239168 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

421239168 is an abundant number, since it is smaller than the sum of its proper divisors (964112592).

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

421239168 is a wasteful number, since it uses less digits than its factorization.

421239168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52264 (or 52249 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 421239168 is about 20524.1118687265. Note that the first 3 decimals coincide. The cubic root of 421239168 is about 749.6230212144.

The spelling of 421239168 in words is "four hundred twenty-one million, two hundred thirty-nine thousand, one hundred sixty-eight".