142329391 has 2 divisors, whose sum is σ = 142329392. Its totient is φ = 142329390.

The previous prime is 142329371. The next prime is 142329413. The reversal of 142329391 is 193923241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142329391 - 2²³ = 133940783 is a prime.

It is equal to p_8036269 and since 142329391 and 8036269 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142329371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71164695 + 71164696.

It is an arithmetic number, because the mean of its divisors is an integer number (71164696).

Almost surely, 2^142329391 is an apocalyptic number.

142329391 is a deficient number, since it is larger than the sum of its proper divisors (1).

142329391 is an equidigital number, since it uses as much as digits as its factorization.

142329391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 142329391 is about 11930.1882214825. The cubic root of 142329391 is about 522.1134291067.

The spelling of 142329391 in words is "one hundred forty-two million, three hundred twenty-nine thousand, three hundred ninety-one".