422002431 has 12 divisors (see below), whose sum is σ = 611523120. Its totient is φ = 280428480.

The previous prime is 422002423. The next prime is 422002447. The reversal of 422002431 is 134200224.

422002431 is a `hidden beast` number, since 422 + 0 + 0 + 243 + 1 = 666.

It is not a de Polignac number, because 422002431 - 2³ = 422002423 is a prime.

It is a super-2 number, since 2×422002431² = 356172103539819522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422002421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72586 + ... + 78183.

It is an arithmetic number, because the mean of its divisors is an integer number (50960260).

Almost surely, 2^422002431 is an apocalyptic number.

422002431 is a deficient number, since it is larger than the sum of its proper divisors (189520689).

422002431 is a wasteful number, since it uses less digits than its factorization.

422002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151086 (or 151083 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 422002431 is about 20542.6977537031. The cubic root of 422002431 is about 750.0755070647.

Adding to 422002431 its reverse (134200224), we get a palindrome (556202655).

The spelling of 422002431 in words is "four hundred twenty-two million, two thousand, four hundred thirty-one".