142115539 has 2 divisors, whose sum is σ = 142115540. Its totient is φ = 142115538.

The previous prime is 142115527. The next prime is 142115569. The reversal of 142115539 is 935511241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142115539 - 2⁵ = 142115507 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 142115539.

It is not a weakly prime, because it can be changed into another prime (142115569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71057769 + 71057770.

It is an arithmetic number, because the mean of its divisors is an integer number (71057770).

Almost surely, 2^142115539 is an apocalyptic number.

142115539 is a deficient number, since it is larger than the sum of its proper divisors (1).

142115539 is an equidigital number, since it uses as much as digits as its factorization.

142115539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 142115539 is about 11921.2222108306. Note that the first 4 decimals coincide. The cubic root of 142115539 is about 521.8518036662.

The spelling of 142115539 in words is "one hundred forty-two million, one hundred fifteen thousand, five hundred thirty-nine".