442453145 has 16 divisors (see below), whose sum is σ = 553286160. Its totient is φ = 339247104.

The previous prime is 442453091. The next prime is 442453157. The reversal of 442453145 is 541354244.

It can be written as a sum of positive squares in 8 ways, for example, as 62047129 + 380406016 = 7877^2 + 19504^2 .

It is a de Polignac number, because none of the positive numbers 2^k-442453145 is a prime.

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, 8729 + ... + 31001.

It is an arithmetic number, because the mean of its divisors is an integer number (34580385).

Almost surely, 2^442453145 is an apocalyptic number.

It is an amenable number.

442453145 is a deficient number, since it is larger than the sum of its proper divisors (110833015).

442453145 is a wasteful number, since it uses less digits than its factorization.

442453145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22444.

The product of its digits is 38400, while the sum is 32.

The square root of 442453145 is about 21034.5702356858. The cubic root of 442453145 is about 762.0013875373.

The spelling of 442453145 in words is "four hundred forty-two million, four hundred fifty-three thousand, one hundred forty-five".