421761344 has 28 divisors (see below), whose sum is σ = 837675744. Its totient is φ = 210693504.

The previous prime is 421761343. The next prime is 421761367. The reversal of 421761344 is 443167124.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 421761344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421761343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95309 + ... + 99635.

Almost surely, 2^421761344 is an apocalyptic number.

It is an amenable number.

421761344 is a deficient number, since it is larger than the sum of its proper divisors (415914400).

421761344 is a wasteful number, since it uses less digits than its factorization.

421761344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862 (or 5852 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 421761344 is about 20536.8289665177. The cubic root of 421761344 is about 749.9326422471.

The spelling of 421761344 in words is "four hundred twenty-one million, seven hundred sixty-one thousand, three hundred forty-four".