442020045 has 16 divisors (see below), whose sum is σ = 709470720. Its totient is φ = 234997824.

The previous prime is 442020023. The next prime is 442020067. The reversal of 442020045 is 540020244.

It is an interprime number because it is at equal distance from previous prime (442020023) and next prime (442020067).

It is not a de Polignac number, because 442020045 - 2¹⁹ = 441495757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41725 + ... + 51234.

It is an arithmetic number, because the mean of its divisors is an integer number (44341920).

Almost surely, 2^442020045 is an apocalyptic number.

It is an amenable number.

442020045 is a deficient number, since it is larger than the sum of its proper divisors (267450675).

442020045 is a wasteful number, since it uses less digits than its factorization.

442020045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93284.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 442020045 is about 21024.2727579339. The cubic root of 442020045 is about 761.7526752948.

Adding to 442020045 its reverse (540020244), we get a palindrome (982040289).

The spelling of 442020045 in words is "four hundred forty-two million, twenty thousand, forty-five".