442357 has 4 divisors (see below), whose sum is σ = 468396. Its totient is φ = 416320.

The previous prime is 442333. The next prime is 442363. The reversal of 442357 is 753244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 401956 + 40401 = 634^2 + 201^2 .

It is a cyclic number.

It is not a de Polignac number, because 442357 - 2⁷ = 442229 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442327) 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, 12994 + ... + 13027.

It is an arithmetic number, because the mean of its divisors is an integer number (117099).

2⁴⁴²³⁵⁷ is an apocalyptic number.

It is an amenable number.

442357 is a deficient number, since it is larger than the sum of its proper divisors (26039).

442357 is a wasteful number, since it uses less digits than its factorization.

442357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26038.

The product of its digits is 3360, while the sum is 25.

The square root of 442357 is about 665.0992407152. The cubic root of 442357 is about 76.1946189278.

It can be divided in two parts, 44 and 2357, that added together give a 4-th power (2401 = 7⁴).

The spelling of 442357 in words is "four hundred forty-two thousand, three hundred fifty-seven".