442137 has 8 divisors (see below), whose sum is σ = 592704. Its totient is φ = 293168.

The previous prime is 442121. The next prime is 442139. The reversal of 442137 is 731244.

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

It is a cyclic number.

It is not a de Polignac number, because 442137 - 2⁴ = 442121 is a prime.

442137 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (442139) 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, 628 + ... + 1130.

It is an arithmetic number, because the mean of its divisors is an integer number (74088).

2⁴⁴²¹³⁷ is an apocalyptic number.

It is an amenable number.

442137 is a deficient number, since it is larger than the sum of its proper divisors (150567).

442137 is a wasteful number, since it uses less digits than its factorization.

442137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 672, while the sum is 21.

The square root of 442137 is about 664.9338312945. The cubic root of 442137 is about 76.1819853943.

The spelling of 442137 in words is "four hundred forty-two thousand, one hundred thirty-seven".