442278115 has 4 divisors (see below), whose sum is σ = 530733744. Its totient is φ = 353822488.

The previous prime is 442278079. The next prime is 442278119. The reversal of 442278115 is 511872244.

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 442278115 - 2⁷ = 442277987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442278119) 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, 44227807 + ... + 44227816.

It is an arithmetic number, because the mean of its divisors is an integer number (132683436).

Almost surely, 2^442278115 is an apocalyptic number.

442278115 is a deficient number, since it is larger than the sum of its proper divisors (88455629).

442278115 is an equidigital number, since it uses as much as digits as its factorization.

442278115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88455628.

The product of its digits is 17920, while the sum is 34.

The square root of 442278115 is about 21030.4092922606. The cubic root of 442278115 is about 761.9008942645.

The spelling of 442278115 in words is "four hundred forty-two million, two hundred seventy-eight thousand, one hundred fifteen".