422142309 has 12 divisors (see below), whose sum is σ = 623942176. Its totient is φ = 274883112.

The previous prime is 422142293. The next prime is 422142313. The reversal of 422142309 is 903241224.

422142309 is a `hidden beast` number, since 422 + 1 + 4 + 230 + 9 = 666.

It is not a de Polignac number, because 422142309 - 2⁴ = 422142293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422142379) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 545017 + ... + 545790.

Almost surely, 2^422142309 is an apocalyptic number.

It is an amenable number.

422142309 is a deficient number, since it is larger than the sum of its proper divisors (201799867).

422142309 is a wasteful number, since it uses less digits than its factorization.

422142309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090856 (or 1090853 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 422142309 is about 20546.1020390730. The cubic root of 422142309 is about 750.1583718888.

The spelling of 422142309 in words is "four hundred twenty-two million, one hundred forty-two thousand, three hundred nine".