442001031 has 4 divisors (see below), whose sum is σ = 589334712. Its totient is φ = 294667352.

The previous prime is 442001029. The next prime is 442001083. The reversal of 442001031 is 130100244.

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

It is a cyclic number.

It is not a de Polignac number, because 442001031 - 2¹ = 442001029 is a prime.

It is a super-2 number, since 2×442001031² = 390729822810125922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442001031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442009031) 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, 73666836 + ... + 73666841.

It is an arithmetic number, because the mean of its divisors is an integer number (147333678).

Almost surely, 2^442001031 is an apocalyptic number.

442001031 is a deficient number, since it is larger than the sum of its proper divisors (147333681).

442001031 is a wasteful number, since it uses less digits than its factorization.

442001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147333680.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 442001031 is about 21023.8205614489. The cubic root of 442001031 is about 761.7417525827.

Adding to 442001031 its reverse (130100244), we get a palindrome (572101275).

The spelling of 442001031 in words is "four hundred forty-two million, one thousand, thirty-one".