342749261 has 2 divisors, whose sum is σ = 342749262. Its totient is φ = 342749260.

The previous prime is 342749249. The next prime is 342749269. The reversal of 342749261 is 162947243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240436036 + 102313225 = 15506^2 + 10115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342749261 is a prime.

It is a super-2 number, since 2×342749261² = 234954111832092242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342749269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171374630 + 171374631.

It is an arithmetic number, because the mean of its divisors is an integer number (171374631).

Almost surely, 2^342749261 is an apocalyptic number.

It is an amenable number.

342749261 is a deficient number, since it is larger than the sum of its proper divisors (1).

342749261 is an equidigital number, since it uses as much as digits as its factorization.

342749261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 342749261 is about 18513.4886231634. The cubic root of 342749261 is about 699.8293876714.

The spelling of 342749261 in words is "three hundred forty-two million, seven hundred forty-nine thousand, two hundred sixty-one".