422142557 has 4 divisors (see below), whose sum is σ = 422250816. Its totient is φ = 422034300.

The previous prime is 422142547. The next prime is 422142559. The reversal of 422142557 is 755241224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422142557 - 2²² = 417948253 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 (422142559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48053 + ... + 56154.

It is an arithmetic number, because the mean of its divisors is an integer number (105562704).

Almost surely, 2^422142557 is an apocalyptic number.

It is an amenable number.

422142557 is a deficient number, since it is larger than the sum of its proper divisors (108259).

422142557 is a wasteful number, since it uses less digits than its factorization.

422142557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108258.

The product of its digits is 22400, while the sum is 32.

The square root of 422142557 is about 20546.1080742802. The cubic root of 422142557 is about 750.1585187897.

The spelling of 422142557 in words is "four hundred twenty-two million, one hundred forty-two thousand, five hundred fifty-seven".