442157108 has 6 divisors (see below), whose sum is σ = 773774946. Its totient is φ = 221078552.

The previous prime is 442157101. The next prime is 442157119. The reversal of 442157108 is 801751244.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 255616144 + 186540964 = 15988^2 + 13658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442157101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55269635 + ... + 55269642.

It is an arithmetic number, because the mean of its divisors is an integer number (128962491).

Almost surely, 2^442157108 is an apocalyptic number.

It is an amenable number.

442157108 is a deficient number, since it is larger than the sum of its proper divisors (331617838).

442157108 is a wasteful number, since it uses less digits than its factorization.

442157108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110539281 (or 110539279 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 442157108 is about 21027.5321424080. The cubic root of 442157108 is about 761.8314027328.

The spelling of 442157108 in words is "four hundred forty-two million, one hundred fifty-seven thousand, one hundred eight".