342157993 has 2 divisors, whose sum is σ = 342157994. Its totient is φ = 342157992.

The previous prime is 342157987. The next prime is 342157999. The reversal of 342157993 is 399751243.

It is a balanced prime because it is at equal distance from previous prime (342157987) and next prime (342157999).

It can be written as a sum of positive squares in only one way, i.e., 326452624 + 15705369 = 18068^2 + 3963^2 .

It is a cyclic number.

It is not a de Polignac number, because 342157993 - 2⁵ = 342157961 is a prime.

It is not a weakly prime, because it can be changed into another prime (342157999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171078996 + 171078997.

It is an arithmetic number, because the mean of its divisors is an integer number (171078997).

Almost surely, 2^342157993 is an apocalyptic number.

It is an amenable number.

342157993 is a deficient number, since it is larger than the sum of its proper divisors (1).

342157993 is an equidigital number, since it uses as much as digits as its factorization.

342157993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 342157993 is about 18497.5131571787. The cubic root of 342157993 is about 699.4267367781.

The spelling of 342157993 in words is "three hundred forty-two million, one hundred fifty-seven thousand, nine hundred ninety-three".