421267760 has 20 divisors (see below), whose sum is σ = 979447728. Its totient is φ = 168507072.

The previous prime is 421267757. The next prime is 421267783. The reversal of 421267760 is 67762124.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 421267760.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2632844 + ... + 2633003.

Almost surely, 2^421267760 is an apocalyptic number.

421267760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421267760 is an abundant number, since it is smaller than the sum of its proper divisors (558179968).

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

421267760 is a wasteful number, since it uses less digits than its factorization.

421267760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265860 (or 5265854 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 421267760 is about 20524.8084034906. The cubic root of 421267760 is about 749.6399812838.

The spelling of 421267760 in words is "four hundred twenty-one million, two hundred sixty-seven thousand, seven hundred sixty".