422404423 has 24 divisors (see below), whose sum is σ = 521654400. Its totient is φ = 334892928.

The previous prime is 422404417. The next prime is 422404439. The reversal of 422404423 is 324404224.

It is a de Polignac number, because none of the positive numbers 2^k-422404423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422464423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117588 + ... + 121126.

It is an arithmetic number, because the mean of its divisors is an integer number (21735600).

Almost surely, 2^422404423 is an apocalyptic number.

422404423 is a deficient number, since it is larger than the sum of its proper divisors (99249977).

422404423 is a wasteful number, since it uses less digits than its factorization.

422404423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 422404423 is about 20552.4797287335. The cubic root of 422404423 is about 750.3136010024.

Adding to 422404423 its reverse (324404224), we get a palindrome (746808647).

The spelling of 422404423 in words is "four hundred twenty-two million, four hundred four thousand, four hundred twenty-three".