142140091 has 2 divisors, whose sum is σ = 142140092. Its totient is φ = 142140090.

The previous prime is 142140059. The next prime is 142140127. The reversal of 142140091 is 190041241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142140091 - 2⁵ = 142140059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142140041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71070045 + 71070046.

It is an arithmetic number, because the mean of its divisors is an integer number (71070046).

Almost surely, 2^142140091 is an apocalyptic number.

142140091 is a deficient number, since it is larger than the sum of its proper divisors (1).

142140091 is an equidigital number, since it uses as much as digits as its factorization.

142140091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 142140091 is about 11922.2519265447. The cubic root of 142140091 is about 521.8818537879.

The spelling of 142140091 in words is "one hundred forty-two million, one hundred forty thousand, ninety-one".