142158557 has 2 divisors, whose sum is σ = 142158558. Its totient is φ = 142158556.

The previous prime is 142158547. The next prime is 142158571. The reversal of 142158557 is 755851241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111809476 + 30349081 = 10574^2 + 5509^2 .

It is an emirp because it is prime and its reverse (755851241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142158557 - 2²⁰ = 141109981 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142158557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142158547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71079278 + 71079279.

It is an arithmetic number, because the mean of its divisors is an integer number (71079279).

Almost surely, 2^142158557 is an apocalyptic number.

It is an amenable number.

142158557 is a deficient number, since it is larger than the sum of its proper divisors (1).

142158557 is an equidigital number, since it uses as much as digits as its factorization.

142158557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56000, while the sum is 38.

The square root of 142158557 is about 11923.0263356247. The cubic root of 142158557 is about 521.9044527439.

The spelling of 142158557 in words is "one hundred forty-two million, one hundred fifty-eight thousand, five hundred fifty-seven".