129740804269 has 4 divisors (see below), whose sum is σ = 129747359196. Its totient is φ = 129734249344.

The previous prime is 129740804231. The next prime is 129740804287. The reversal of 129740804269 is 962408047921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13452984169 + 116287820100 = 115987^2 + 341010^2 .

It is a cyclic number.

It is not a de Polignac number, because 129740804269 - 2¹¹ = 129740802221 is a prime.

It is a super-2 number, since 2×129740804269² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129740804209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3247684 + ... + 3287389.

It is an arithmetic number, because the mean of its divisors is an integer number (32436839799).

Almost surely, 2^129740804269 is an apocalyptic number.

It is an amenable number.

129740804269 is a deficient number, since it is larger than the sum of its proper divisors (6554927).

129740804269 is an equidigital number, since it uses as much as digits as its factorization.

129740804269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6554926.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 129740804269 in words is "one hundred twenty-nine billion, seven hundred forty million, eight hundred four thousand, two hundred sixty-nine".