142164257 has 2 divisors, whose sum is σ = 142164258. Its totient is φ = 142164256.

The previous prime is 142164241. The next prime is 142164259. The reversal of 142164257 is 752461241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95433361 + 46730896 = 9769^2 + 6836^2 .

It is a cyclic number.

It is not a de Polignac number, because 142164257 - 2⁴ = 142164241 is a prime.

Together with 142164259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142164259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71082128 + 71082129.

It is an arithmetic number, because the mean of its divisors is an integer number (71082129).

Almost surely, 2^142164257 is an apocalyptic number.

It is an amenable number.

142164257 is a deficient number, since it is larger than the sum of its proper divisors (1).

142164257 is an equidigital number, since it uses as much as digits as its factorization.

142164257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The square root of 142164257 is about 11923.2653665009. The cubic root of 142164257 is about 521.9114280905.

The spelling of 142164257 in words is "one hundred forty-two million, one hundred sixty-four thousand, two hundred fifty-seven".