142071539 has 2 divisors, whose sum is σ = 142071540. Its totient is φ = 142071538.

The previous prime is 142071511. The next prime is 142071541. The reversal of 142071539 is 935170241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142071539 - 2¹⁶ = 142006003 is a prime.

Together with 142071541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142071599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71035769 + 71035770.

It is an arithmetic number, because the mean of its divisors is an integer number (71035770).

Almost surely, 2^142071539 is an apocalyptic number.

142071539 is a deficient number, since it is larger than the sum of its proper divisors (1).

142071539 is an equidigital number, since it uses as much as digits as its factorization.

142071539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 142071539 is about 11919.3766196056. The cubic root of 142071539 is about 521.7979417413.

The spelling of 142071539 in words is "one hundred forty-two million, seventy-one thousand, five hundred thirty-nine".