142843117 has 2 divisors, whose sum is σ = 142843118. Its totient is φ = 142843116.

The previous prime is 142843111. The next prime is 142843147. The reversal of 142843117 is 711348241.

142843117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142778601 + 64516 = 11949^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 142843117 - 2⁷ = 142842989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142843111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71421558 + 71421559.

It is an arithmetic number, because the mean of its divisors is an integer number (71421559).

Almost surely, 2^142843117 is an apocalyptic number.

It is an amenable number.

142843117 is a deficient number, since it is larger than the sum of its proper divisors (1).

142843117 is an equidigital number, since it uses as much as digits as its factorization.

142843117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 142843117 is about 11951.6993352410. The cubic root of 142843117 is about 522.7408497151.

The spelling of 142843117 in words is "one hundred forty-two million, eight hundred forty-three thousand, one hundred seventeen".