442157 has 2 divisors, whose sum is σ = 442158. Its totient is φ = 442156.

The previous prime is 442151. The next prime is 442171. The reversal of 442157 is 751244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 121801 = 566^2 + 349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442151) 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 as a sum of consecutive naturals, namely, 221078 + 221079.

It is an arithmetic number, because the mean of its divisors is an integer number (221079).

2⁴⁴²¹⁵⁷ is an apocalyptic number.

It is an amenable number.

442157 is a deficient number, since it is larger than the sum of its proper divisors (1).

442157 is an equidigital number, since it uses as much as digits as its factorization.

442157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 23.

The square root of 442157 is about 664.9488702148. The cubic root of 442157 is about 76.1831340705.

The spelling of 442157 in words is "four hundred forty-two thousand, one hundred fifty-seven".