142183939 has 2 divisors, whose sum is σ = 142183940. Its totient is φ = 142183938.

The previous prime is 142183919. The next prime is 142183957. The reversal of 142183939 is 939381241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142183939 - 2²³ = 133795331 is a prime.

It is not a weakly prime, because it can be changed into another prime (142183919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71091969 + 71091970.

It is an arithmetic number, because the mean of its divisors is an integer number (71091970).

Almost surely, 2^142183939 is an apocalyptic number.

142183939 is a deficient number, since it is larger than the sum of its proper divisors (1).

142183939 is an equidigital number, since it uses as much as digits as its factorization.

142183939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 142183939 is about 11924.0906990848. The cubic root of 142183939 is about 521.9355124066.

The spelling of 142183939 in words is "one hundred forty-two million, one hundred eighty-three thousand, nine hundred thirty-nine".