142439963 has 2 divisors, whose sum is σ = 142439964. Its totient is φ = 142439962.

The previous prime is 142439959. The next prime is 142439993. The reversal of 142439963 is 369934241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142439963 - 2² = 142439959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142439963.

It is not a weakly prime, because it can be changed into another prime (142439953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71219981 + 71219982.

It is an arithmetic number, because the mean of its divisors is an integer number (71219982).

Almost surely, 2^142439963 is an apocalyptic number.

142439963 is a deficient number, since it is larger than the sum of its proper divisors (1).

142439963 is an equidigital number, since it uses as much as digits as its factorization.

142439963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The square root of 142439963 is about 11934.8214481826. The cubic root of 142439963 is about 522.2485995546.

The spelling of 142439963 in words is "one hundred forty-two million, four hundred thirty-nine thousand, nine hundred sixty-three".