142947859 has 2 divisors, whose sum is σ = 142947860. Its totient is φ = 142947858.

The previous prime is 142947839. The next prime is 142947863. The reversal of 142947859 is 958749241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142947859 - 2²¹ = 140850707 is a prime.

It is not a weakly prime, because it can be changed into another prime (142947839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71473929 + 71473930.

It is an arithmetic number, because the mean of its divisors is an integer number (71473930).

Almost surely, 2^142947859 is an apocalyptic number.

142947859 is a deficient number, since it is larger than the sum of its proper divisors (1).

142947859 is an equidigital number, since it uses as much as digits as its factorization.

142947859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 142947859 is about 11956.0804196024. The cubic root of 142947859 is about 522.8685878609.

The spelling of 142947859 in words is "one hundred forty-two million, nine hundred forty-seven thousand, eight hundred fifty-nine".