129079743 has 32 divisors (see below), whose sum is σ = 189336000. Its totient is φ = 77746176.

The previous prime is 129079723. The next prime is 129079747. The reversal of 129079743 is 347970921.

It is not a de Polignac number, because 129079743 - 2⁹ = 129079231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129079695 and 129079704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129079747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 563553 + ... + 563781.

It is an arithmetic number, because the mean of its divisors is an integer number (5916750).

Almost surely, 2^129079743 is an apocalyptic number.

129079743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

129079743 is a deficient number, since it is larger than the sum of its proper divisors (60256257).

129079743 is a wasteful number, since it uses less digits than its factorization.

129079743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 129079743 is about 11361.3266390858. The cubic root of 129079743 is about 505.3815278447.

The spelling of 129079743 in words is "one hundred twenty-nine million, seventy-nine thousand, seven hundred forty-three".