442002043 has 4 divisors (see below), whose sum is σ = 505145200. Its totient is φ = 378858888.

The previous prime is 442002013. The next prime is 442002089. The reversal of 442002043 is 340200244.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442002043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442002043.

It is not an unprimeable number, because it can be changed into a prime (442002013) 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, 31571568 + ... + 31571581.

It is an arithmetic number, because the mean of its divisors is an integer number (126286300).

Almost surely, 2^442002043 is an apocalyptic number.

442002043 is a deficient number, since it is larger than the sum of its proper divisors (63143157).

442002043 is an equidigital number, since it uses as much as digits as its factorization.

442002043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63143156.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 442002043 is about 21023.8446293726. The cubic root of 442002043 is about 761.7423339404.

Adding to 442002043 its reverse (340200244), we get a palindrome (782202287).

The spelling of 442002043 in words is "four hundred forty-two million, two thousand, forty-three".