142357939 has 2 divisors, whose sum is σ = 142357940. Its totient is φ = 142357938.

The previous prime is 142357931. The next prime is 142357961. The reversal of 142357939 is 939753241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142357939 - 2³ = 142357931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142357895 and 142357904.

It is not a weakly prime, because it can be changed into another prime (142357931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71178969 + 71178970.

It is an arithmetic number, because the mean of its divisors is an integer number (71178970).

Almost surely, 2^142357939 is an apocalyptic number.

142357939 is a deficient number, since it is larger than the sum of its proper divisors (1).

142357939 is an equidigital number, since it uses as much as digits as its factorization.

142357939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 142357939 is about 11931.3846220797. The cubic root of 142357939 is about 522.1483347520.

The spelling of 142357939 in words is "one hundred forty-two million, three hundred fifty-seven thousand, nine hundred thirty-nine".