340123139 has 2 divisors, whose sum is σ = 340123140. Its totient is φ = 340123138.

The previous prime is 340123109. The next prime is 340123153. The reversal of 340123139 is 931321043.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340123139 - 2¹⁶ = 340057603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340123109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170061569 + 170061570.

It is an arithmetic number, because the mean of its divisors is an integer number (170061570).

Almost surely, 2^340123139 is an apocalyptic number.

340123139 is a deficient number, since it is larger than the sum of its proper divisors (1).

340123139 is an equidigital number, since it uses as much as digits as its factorization.

340123139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 340123139 is about 18442.4276872650. The cubic root of 340123139 is about 698.0374545792.

The spelling of 340123139 in words is "three hundred forty million, one hundred twenty-three thousand, one hundred thirty-nine".