442131128 has 16 divisors (see below), whose sum is σ = 829252080. Its totient is φ = 220997248.

The previous prime is 442131113. The next prime is 442131133. The reversal of 442131128 is 821131244.

It is a junction number, because it is equal to n+sod(n) for n = 442131097 and 442131106.

It is a congruent number.

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, 28325 + ... + 41067.

It is an arithmetic number, because the mean of its divisors is an integer number (51828255).

Almost surely, 2^442131128 is an apocalyptic number.

It is an amenable number.

442131128 is a deficient number, since it is larger than the sum of its proper divisors (387120952).

442131128 is a wasteful number, since it uses less digits than its factorization.

442131128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17086 (or 17082 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 442131128 is about 21026.9143718236. The cubic root of 442131128 is about 761.8164813642.

The spelling of 442131128 in words is "four hundred forty-two million, one hundred thirty-one thousand, one hundred twenty-eight".