142812257 has 16 divisors (see below), whose sum is σ = 178394112. Its totient is φ = 111490560.

The previous prime is 142812253. The next prime is 142812259. The reversal of 142812257 is 752218241.

It is a cyclic number.

It is not a de Polignac number, because 142812257 - 2² = 142812253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142812253) 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, 15668 + ... + 23045.

It is an arithmetic number, because the mean of its divisors is an integer number (11149632).

Almost surely, 2^142812257 is an apocalyptic number.

142812257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142812257 is a deficient number, since it is larger than the sum of its proper divisors (35581855).

142812257 is a wasteful number, since it uses less digits than its factorization.

142812257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38768.

The product of its digits is 8960, while the sum is 32.

The square root of 142812257 is about 11950.4082357048. The cubic root of 142812257 is about 522.7032024817.

The spelling of 142812257 in words is "one hundred forty-two million, eight hundred twelve thousand, two hundred fifty-seven".