340135129 has 2 divisors, whose sum is σ = 340135130. Its totient is φ = 340135128.

The previous prime is 340135123. The next prime is 340135141. The reversal of 340135129 is 921531043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221325129 + 118810000 = 14877^2 + 10900^2 .

It is a cyclic number.

It is not a de Polignac number, because 340135129 - 2³ = 340135121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340135097 and 340135106.

It is not a weakly prime, because it can be changed into another prime (340135121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170067564 + 170067565.

It is an arithmetic number, because the mean of its divisors is an integer number (170067565).

Almost surely, 2^340135129 is an apocalyptic number.

It is an amenable number.

340135129 is a deficient number, since it is larger than the sum of its proper divisors (1).

340135129 is an equidigital number, since it uses as much as digits as its factorization.

340135129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 340135129 is about 18442.7527500642. The cubic root of 340135129 is about 698.0456568740.

The spelling of 340135129 in words is "three hundred forty million, one hundred thirty-five thousand, one hundred twenty-nine".