421263768 has 32 divisors (see below), whose sum is σ = 1098950400. Its totient is φ = 134315808.

The previous prime is 421263751. The next prime is 421263781. The reversal of 421263768 is 867362124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381028 + ... + 382131.

It is an arithmetic number, because the mean of its divisors is an integer number (34342200).

Almost surely, 2^421263768 is an apocalyptic number.

It is an amenable number.

421263768 is an abundant number, since it is smaller than the sum of its proper divisors (677686632).

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

421263768 is a wasteful number, since it uses less digits than its factorization.

421263768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763191 (or 763187 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 421263768 is about 20524.7111550930. The cubic root of 421263768 is about 749.6376133739.

The spelling of 421263768 in words is "four hundred twenty-one million, two hundred sixty-three thousand, seven hundred sixty-eight".