129451240347 has 16 divisors (see below), whose sum is σ = 202776768768. Its totient is φ = 72420274080.

The previous prime is 129451240343. The next prime is 129451240357. The reversal of 129451240347 is 743042154921.

It is not a de Polignac number, because 129451240347 - 2² = 129451240343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129451240299 and 129451240308.

It is not an unprimeable number, because it can be changed into a prime (129451240343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150875143 + ... + 150876000.

It is an arithmetic number, because the mean of its divisors is an integer number (12673548048).

Almost surely, 2^129451240347 is an apocalyptic number.

129451240347 is a deficient number, since it is larger than the sum of its proper divisors (73325528421).

129451240347 is a wasteful number, since it uses less digits than its factorization.

129451240347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301751170.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 129451240347 in words is "one hundred twenty-nine billion, four hundred fifty-one million, two hundred forty thousand, three hundred forty-seven".