142934257 has 2 divisors, whose sum is σ = 142934258. Its totient is φ = 142934256.

The previous prime is 142934251. The next prime is 142934261. The reversal of 142934257 is 752439241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123565456 + 19368801 = 11116^2 + 4401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142934257 is a prime.

It is equal to p_8068546 and since 142934257 and 8068546 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142934251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71467128 + 71467129.

It is an arithmetic number, because the mean of its divisors is an integer number (71467129).

Almost surely, 2^142934257 is an apocalyptic number.

It is an amenable number.

142934257 is a deficient number, since it is larger than the sum of its proper divisors (1).

142934257 is an equidigital number, since it uses as much as digits as its factorization.

142934257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 142934257 is about 11955.5115741653. The cubic root of 142934257 is about 522.8520030628.

The spelling of 142934257 in words is "one hundred forty-two million, nine hundred thirty-four thousand, two hundred fifty-seven".