442143115 has 16 divisors (see below), whose sum is σ = 540482976. Its totient is φ = 347155200.

The previous prime is 442143113. The next prime is 442143133. The reversal of 442143115 is 511341244.

It is not a de Polignac number, because 442143115 - 2¹ = 442143113 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 442143115.

It is not an unprimeable number, because it can be changed into a prime (442143113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74145 + ... + 79885.

It is an arithmetic number, because the mean of its divisors is an integer number (33780186).

Almost surely, 2^442143115 is an apocalyptic number.

442143115 is a deficient number, since it is larger than the sum of its proper divisors (98339861).

442143115 is a wasteful number, since it uses less digits than its factorization.

442143115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6030.

The product of its digits is 1920, while the sum is 25.

The square root of 442143115 is about 21027.1994093365. The cubic root of 442143115 is about 761.8233660575.

Adding to 442143115 its reverse (511341244), we get a palindrome (953484359).

The spelling of 442143115 in words is "four hundred forty-two million, one hundred forty-three thousand, one hundred fifteen".