142322993 has 2 divisors, whose sum is σ = 142322994. Its totient is φ = 142322992.

The previous prime is 142322989. The next prime is 142323007. The reversal of 142322993 is 399223241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101465329 + 40857664 = 10073^2 + 6392^2 .

It is a cyclic number.

It is not a de Polignac number, because 142322993 - 2² = 142322989 is a prime.

It is not a weakly prime, because it can be changed into another prime (142322933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71161496 + 71161497.

It is an arithmetic number, because the mean of its divisors is an integer number (71161497).

Almost surely, 2^142322993 is an apocalyptic number.

It is an amenable number.

142322993 is a deficient number, since it is larger than the sum of its proper divisors (1).

142322993 is an equidigital number, since it uses as much as digits as its factorization.

142322993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 142322993 is about 11929.9200751723. The cubic root of 142322993 is about 522.1056056306.

The spelling of 142322993 in words is "one hundred forty-two million, three hundred twenty-two thousand, nine hundred ninety-three".