128747142 has 12 divisors (see below), whose sum is σ = 278952180. Its totient is φ = 42915708.

The previous prime is 128747081. The next prime is 128747167. The reversal of 128747142 is 241747821.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 128747097 and 128747106.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 3576292 + ... + 3576327.

It is an arithmetic number, because the mean of its divisors is an integer number (23246015).

Almost surely, 2^128747142 is an apocalyptic number.

128747142 is an abundant number, since it is smaller than the sum of its proper divisors (150205038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128747142 is a wasteful number, since it uses less digits than its factorization.

128747142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152627 (or 7152624 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 128747142 is about 11346.6797786842. The cubic root of 128747142 is about 504.9470806881.

The spelling of 128747142 in words is "one hundred twenty-eight million, seven hundred forty-seven thousand, one hundred forty-two".