142587539 has 2 divisors, whose sum is σ = 142587540. Its totient is φ = 142587538.

The previous prime is 142587509. The next prime is 142587541. The reversal of 142587539 is 935785241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142587539 - 2¹² = 142583443 is a prime.

Together with 142587541, it forms a pair of twin primes.

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 142587539.

It is not a weakly prime, because it can be changed into another prime (142587509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71293769 + 71293770.

It is an arithmetic number, because the mean of its divisors is an integer number (71293770).

Almost surely, 2^142587539 is an apocalyptic number.

142587539 is a deficient number, since it is larger than the sum of its proper divisors (1).

142587539 is an equidigital number, since it uses as much as digits as its factorization.

142587539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 142587539 is about 11941.0024286071. The cubic root of 142587539 is about 522.4288971720.

The spelling of 142587539 in words is "one hundred forty-two million, five hundred eighty-seven thousand, five hundred thirty-nine".