422157 has 8 divisors (see below), whose sum is σ = 568480. Its totient is φ = 278640.

The previous prime is 422141. The next prime is 422183. The reversal of 422157 is 751224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422157 - 2⁴ = 422141 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 (422137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (71060).

2⁴²²¹⁵⁷ is an apocalyptic number.

It is an amenable number.

422157 is a deficient number, since it is larger than the sum of its proper divisors (146323).

422157 is a wasteful number, since it uses less digits than its factorization.

422157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its digits is 560, while the sum is 21.

The square root of 422157 is about 649.7361002746. The cubic root of 422157 is about 75.0167073890.

It can be divided in two parts, 4221 and 57, that added together give a triangular number (4278 = T₉₂).

The spelling of 422157 in words is "four hundred twenty-two thousand, one hundred fifty-seven".