142308291 has 16 divisors (see below), whose sum is σ = 199224576. Its totient is φ = 90183456.

The previous prime is 142308277. The next prime is 142308319. The reversal of 142308291 is 192803241.

It is not a de Polignac number, because 142308291 - 2⁷ = 142308163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142308251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4921 + ... + 17573.

It is an arithmetic number, because the mean of its divisors is an integer number (12451536).

Almost surely, 2^142308291 is an apocalyptic number.

142308291 is a deficient number, since it is larger than the sum of its proper divisors (56916285).

142308291 is a wasteful number, since it uses less digits than its factorization.

142308291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12842.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 142308291 is about 11929.3038774272. The cubic root of 142308291 is about 522.0876271326.

The spelling of 142308291 in words is "one hundred forty-two million, three hundred eight thousand, two hundred ninety-one".