142715557 has 2 divisors, whose sum is σ = 142715558. Its totient is φ = 142715556.

The previous prime is 142715509. The next prime is 142715563. The reversal of 142715557 is 755517241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108035236 + 34680321 = 10394^2 + 5889^2 .

It is an emirp because it is prime and its reverse (755517241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142715557 - 2¹⁵ = 142682789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142715567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71357778 + 71357779.

It is an arithmetic number, because the mean of its divisors is an integer number (71357779).

Almost surely, 2^142715557 is an apocalyptic number.

It is an amenable number.

142715557 is a deficient number, since it is larger than the sum of its proper divisors (1).

142715557 is an equidigital number, since it uses as much as digits as its factorization.

142715557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49000, while the sum is 37.

The square root of 142715557 is about 11946.3616637033. The cubic root of 142715557 is about 522.5851995097.

The spelling of 142715557 in words is "one hundred forty-two million, seven hundred fifteen thousand, five hundred fifty-seven".