442457 has 2 divisors, whose sum is σ = 442458. Its totient is φ = 442456.

The previous prime is 442447. The next prime is 442469. The reversal of 442457 is 754244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379456 + 63001 = 616^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 442457 - 2⁸ = 442201 is a prime.

It is not a weakly prime, because it can be changed into another prime (442447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221228 + 221229.

It is an arithmetic number, because the mean of its divisors is an integer number (221229).

2⁴⁴²⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

442457 is a deficient number, since it is larger than the sum of its proper divisors (1).

442457 is an equidigital number, since it uses as much as digits as its factorization.

442457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 26.

The square root of 442457 is about 665.1744132181. The cubic root of 442457 is about 76.2003600583.

The spelling of 442457 in words is "four hundred forty-two thousand, four hundred fifty-seven".