142947863 has 2 divisors, whose sum is σ = 142947864. Its totient is φ = 142947862.

The previous prime is 142947859. The next prime is 142947899. The reversal of 142947863 is 368749241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142947863 - 2² = 142947859 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142947803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71473931 + 71473932.

It is an arithmetic number, because the mean of its divisors is an integer number (71473932).

Almost surely, 2^142947863 is an apocalyptic number.

142947863 is a deficient number, since it is larger than the sum of its proper divisors (1).

142947863 is an equidigital number, since it uses as much as digits as its factorization.

142947863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 142947863 is about 11956.0805868813. The cubic root of 142947863 is about 522.8685927379.

The spelling of 142947863 in words is "one hundred forty-two million, nine hundred forty-seven thousand, eight hundred sixty-three".