142128057 has 8 divisors (see below), whose sum is σ = 190951200. Its totient is φ = 94028480.

The previous prime is 142128023. The next prime is 142128061. The reversal of 142128057 is 750821241.

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

It is a cyclic number.

It is not a de Polignac number, because 142128057 - 2⁷ = 142127929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142128067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180432 + ... + 181217.

It is an arithmetic number, because the mean of its divisors is an integer number (23868900).

Almost surely, 2^142128057 is an apocalyptic number.

It is an amenable number.

142128057 is a deficient number, since it is larger than the sum of its proper divisors (48823143).

142128057 is a wasteful number, since it uses less digits than its factorization.

142128057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361783.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 142128057 is about 11921.7472293284. The cubic root of 142128057 is about 521.8671253524.

Adding to 142128057 its reverse (750821241), we get a palindrome (892949298).

The spelling of 142128057 in words is "one hundred forty-two million, one hundred twenty-eight thousand, fifty-seven".