342156197 has 2 divisors, whose sum is σ = 342156198. Its totient is φ = 342156196.

The previous prime is 342156187. The next prime is 342156253. The reversal of 342156197 is 791651243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331567681 + 10588516 = 18209^2 + 3254^2 .

It is a cyclic number.

It is not a de Polignac number, because 342156197 - 2¹² = 342152101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342156197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342156107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171078098 + 171078099.

It is an arithmetic number, because the mean of its divisors is an integer number (171078099).

Almost surely, 2^342156197 is an apocalyptic number.

It is an amenable number.

342156197 is a deficient number, since it is larger than the sum of its proper divisors (1).

342156197 is an equidigital number, since it uses as much as digits as its factorization.

342156197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 342156197 is about 18497.4646100486. The cubic root of 342156197 is about 699.4255130037.

The spelling of 342156197 in words is "three hundred forty-two million, one hundred fifty-six thousand, one hundred ninety-seven".