128442932 has 12 divisors (see below), whose sum is σ = 224881440. Its totient is φ = 64191096.

The previous prime is 128442929. The next prime is 128442949. The reversal of 128442932 is 239244821.

It is a junction number, because it is equal to n+sod(n) for n = 128442892 and 128442901.

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, 3833 + ... + 16479.

It is an arithmetic number, because the mean of its divisors is an integer number (18740120).

Almost surely, 2^128442932 is an apocalyptic number.

It is an amenable number.

128442932 is a deficient number, since it is larger than the sum of its proper divisors (96438508).

128442932 is a wasteful number, since it uses less digits than its factorization.

128442932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190 (or 15188 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 128442932 is about 11333.2666076467. The cubic root of 128442932 is about 504.5490625424.

The spelling of 128442932 in words is "one hundred twenty-eight million, four hundred forty-two thousand, nine hundred thirty-two".