345126137 has 2 divisors, whose sum is σ = 345126138. Its totient is φ = 345126136.

The previous prime is 345126107. The next prime is 345126143. The reversal of 345126137 is 731621543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342102016 + 3024121 = 18496^2 + 1739^2 .

It is a cyclic number.

It is not a de Polignac number, because 345126137 - 2¹⁶ = 345060601 is a prime.

It is a super-2 number, since 2×345126137² = 238224100881085538, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345126107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172563068 + 172563069.

It is an arithmetic number, because the mean of its divisors is an integer number (172563069).

Almost surely, 2^345126137 is an apocalyptic number.

It is an amenable number.

345126137 is a deficient number, since it is larger than the sum of its proper divisors (1).

345126137 is an equidigital number, since it uses as much as digits as its factorization.

345126137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 345126137 is about 18577.5708046020. The cubic root of 345126137 is about 701.4433734737.

The spelling of 345126137 in words is "three hundred forty-five million, one hundred twenty-six thousand, one hundred thirty-seven".