422642157 has 32 divisors (see below), whose sum is σ = 666796032. Its totient is φ = 233077824.

The previous prime is 422642153. The next prime is 422642167. The reversal of 422642157 is 751246224.

It is not a de Polignac number, because 422642157 - 2² = 422642153 is a prime.

It is a super-2 number, since 2×422642157² = 357252785747225298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422642153) 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 31 ways as a sum of consecutive naturals, for example, 96538 + ... + 100820.

It is an arithmetic number, because the mean of its divisors is an integer number (20837376).

Almost surely, 2^422642157 is an apocalyptic number.

It is an amenable number.

422642157 is a deficient number, since it is larger than the sum of its proper divisors (244153875).

422642157 is a wasteful number, since it uses less digits than its factorization.

422642157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457.

The product of its digits is 26880, while the sum is 33.

The square root of 422642157 is about 20558.2624995402. The cubic root of 422642157 is about 750.4543362714.

The spelling of 422642157 in words is "four hundred twenty-two million, six hundred forty-two thousand, one hundred fifty-seven".