421713072 has 90 divisors (see below), whose sum is σ = 1297310196. Its totient is φ = 127786560.

The previous prime is 421713059. The next prime is 421713133. The reversal of 421713072 is 270317124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5323 + ... + 29525.

Almost surely, 2^421713072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421713072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648655098).

421713072 is an abundant number, since it is smaller than the sum of its proper divisors (875597124).

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

421713072 is a wasteful number, since it uses less digits than its factorization.

421713072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24239 (or 24219 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 421713072 is about 20535.6536784199. The cubic root of 421713072 is about 749.9040303870.

The spelling of 421713072 in words is "four hundred twenty-one million, seven hundred thirteen thousand, seventy-two".