722324421 has 36 divisors (see below), whose sum is σ = 1291207008. Its totient is φ = 381000672.

The previous prime is 722324399. The next prime is 722324423. The reversal of 722324421 is 124423227.

722324421 is a `hidden beast` number, since 7 + 2 + 232 + 4 + 421 = 666.

It is not a de Polignac number, because 722324421 - 2⁷ = 722324293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722324423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23275 + ... + 44568.

Almost surely, 2^722324421 is an apocalyptic number.

It is an amenable number.

722324421 is a deficient number, since it is larger than the sum of its proper divisors (568882587).

722324421 is a wasteful number, since it uses less digits than its factorization.

722324421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67882 (or 67866 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 722324421 is about 26876.0938568089. The cubic root of 722324421 is about 897.2444198454.

Adding to 722324421 its reverse (124423227), we get a palindrome (846747648).

The spelling of 722324421 in words is "seven hundred twenty-two million, three hundred twenty-four thousand, four hundred twenty-one".