142028657 has 16 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 133356432.

The previous prime is 142028651. The next prime is 142028707. The reversal of 142028657 is 756820241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142028657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142028651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395444 + ... + 395802.

It is an arithmetic number, because the mean of its divisors is an integer number (9434880).

Almost surely, 2^142028657 is an apocalyptic number.

It is an amenable number.

142028657 is a deficient number, since it is larger than the sum of its proper divisors (8929423).

142028657 is a wasteful number, since it uses less digits than its factorization.

142028657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 142028657 is about 11917.5776481632. The cubic root of 142028657 is about 521.7454376974.

Adding to 142028657 its reverse (756820241), we get a palindrome (898848898).

The spelling of 142028657 in words is "one hundred forty-two million, twenty-eight thousand, six hundred fifty-seven".