128232142 has 16 divisors (see below), whose sum is σ = 199648800. Its totient is φ = 61697440.

The previous prime is 128232131. The next prime is 128232161. The reversal of 128232142 is 241232821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14484 + ... + 21592.

It is an arithmetic number, because the mean of its divisors is an integer number (12478050).

Almost surely, 2^128232142 is an apocalyptic number.

128232142 is a deficient number, since it is larger than the sum of its proper divisors (71416658).

128232142 is a wasteful number, since it uses less digits than its factorization.

128232142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451.

The product of its digits is 1536, while the sum is 25.

The square root of 128232142 is about 11323.9631754965. The cubic root of 128232142 is about 504.2729032445.

Adding to 128232142 its reverse (241232821), we get a palindrome (369464963).

The spelling of 128232142 in words is "one hundred twenty-eight million, two hundred thirty-two thousand, one hundred forty-two".