142289999 has 2 divisors, whose sum is σ = 142290000. Its totient is φ = 142289998.

The previous prime is 142289957. The next prime is 142290007. The reversal of 142289999 is 999982241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142289999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142289999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142289929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71144999 + 71145000.

It is an arithmetic number, because the mean of its divisors is an integer number (71145000).

Almost surely, 2^142289999 is an apocalyptic number.

142289999 is a deficient number, since it is larger than the sum of its proper divisors (1).

142289999 is an equidigital number, since it uses as much as digits as its factorization.

142289999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 53.

The square root of 142289999 is about 11928.5371693263. The cubic root of 142289999 is about 522.0652568359.

The spelling of 142289999 in words is "one hundred forty-two million, two hundred eighty-nine thousand, nine hundred ninety-nine".