142142291 has 2 divisors, whose sum is σ = 142142292. Its totient is φ = 142142290.

The previous prime is 142142263. The next prime is 142142303. The reversal of 142142291 is 192241241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142142291 - 2⁶ = 142142227 is a prime.

It is a Chen prime.

It is equal to p_8026235 and since 142142291 and 8026235 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142142291.

It is not a weakly prime, because it can be changed into another prime (142144291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71071145 + 71071146.

It is an arithmetic number, because the mean of its divisors is an integer number (71071146).

Almost surely, 2^142142291 is an apocalyptic number.

142142291 is a deficient number, since it is larger than the sum of its proper divisors (1).

142142291 is an equidigital number, since it uses as much as digits as its factorization.

142142291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 142142291 is about 11922.3441906363. The cubic root of 142142291 is about 521.8845462822.

The spelling of 142142291 in words is "one hundred forty-two million, one hundred forty-two thousand, two hundred ninety-one".