422403138 has 12 divisors (see below), whose sum is σ = 915206838. Its totient is φ = 140801040.

The previous prime is 422403127. The next prime is 422403169. The reversal of 422403138 is 831304224.

It can be written as a sum of positive squares in only one way, i.e., 416037609 + 6365529 = 20397^2 + 2523^2 .

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 5 ways as a sum of consecutive naturals, for example, 11733403 + ... + 11733438.

Almost surely, 2^422403138 is an apocalyptic number.

422403138 is an abundant number, since it is smaller than the sum of its proper divisors (492803700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422403138 is a wasteful number, since it uses less digits than its factorization.

422403138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466849 (or 23466846 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 422403138 is about 20552.4484672751. The cubic root of 422403138 is about 750.3128401566.

The spelling of 422403138 in words is "four hundred twenty-two million, four hundred three thousand, one hundred thirty-eight".