442051315 has 4 divisors (see below), whose sum is σ = 530461584. Its totient is φ = 353641048.

The previous prime is 442051303. The next prime is 442051331. The reversal of 442051315 is 513150244.

It is a happy number.

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-442051315 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442051315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44205127 + ... + 44205136.

It is an arithmetic number, because the mean of its divisors is an integer number (132615396).

Almost surely, 2^442051315 is an apocalyptic number.

442051315 is a deficient number, since it is larger than the sum of its proper divisors (88410269).

442051315 is an equidigital number, since it uses as much as digits as its factorization.

442051315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88410268.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 442051315 is about 21025.0164090305. The cubic root of 442051315 is about 761.7706378621.

The spelling of 442051315 in words is "four hundred forty-two million, fifty-one thousand, three hundred fifteen".