142289957 has 2 divisors, whose sum is σ = 142289958. Its totient is φ = 142289956.

The previous prime is 142289951. The next prime is 142289999. The reversal of 142289957 is 759982241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120143521 + 22146436 = 10961^2 + 4706^2 .

It is an emirp because it is prime and its reverse (759982241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142289957 - 2⁴ = 142289941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142289951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71144978 + 71144979.

It is an arithmetic number, because the mean of its divisors is an integer number (71144979).

Almost surely, 2^142289957 is an apocalyptic number.

It is an amenable number.

142289957 is a deficient number, since it is larger than the sum of its proper divisors (1).

142289957 is an equidigital number, since it uses as much as digits as its factorization.

142289957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 142289957 is about 11928.5354088421. The cubic root of 142289957 is about 522.0652054695.

The spelling of 142289957 in words is "one hundred forty-two million, two hundred eighty-nine thousand, nine hundred fifty-seven".