128056142 has 8 divisors (see below), whose sum is σ = 192564432. Its totient is φ = 63868000.

The previous prime is 128056139. The next prime is 128056171. The reversal of 128056142 is 241650821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79034 + ... + 80637.

It is an arithmetic number, because the mean of its divisors is an integer number (24070554).

Almost surely, 2^128056142 is an apocalyptic number.

128056142 is a deficient number, since it is larger than the sum of its proper divisors (64508290).

128056142 is a wasteful number, since it uses less digits than its factorization.

128056142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160074.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 128056142 is about 11316.1893762874. The cubic root of 128056142 is about 504.0420909460.

The spelling of 128056142 in words is "one hundred twenty-eight million, fifty-six thousand, one hundred forty-two".