421317772 has 12 divisors (see below), whose sum is σ = 769363056. Its totient is φ = 201499760.

The previous prime is 421317769. The next prime is 421317781. The reversal of 421317772 is 277713124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2289679 + ... + 2289862.

It is an arithmetic number, because the mean of its divisors is an integer number (64113588).

Almost surely, 2^421317772 is an apocalyptic number.

It is an amenable number.

421317772 is a deficient number, since it is larger than the sum of its proper divisors (348045284).

421317772 is a wasteful number, since it uses less digits than its factorization.

421317772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579568 (or 4579566 counting only the distinct ones).

The product of its digits is 16464, while the sum is 34.

The square root of 421317772 is about 20526.0266978293. The cubic root of 421317772 is about 749.6696453239.

The spelling of 421317772 in words is "four hundred twenty-one million, three hundred seventeen thousand, seven hundred seventy-two".