115120729 has 4 divisors (see below), whose sum is σ = 115165876. Its totient is φ = 115075584.

The previous prime is 115120711. The next prime is 115120771. The reversal of 115120729 is 927021511.

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 96432400 + 18688329 = 9820^2 + 4323^2 .

It is a cyclic number.

It is not a de Polignac number, because 115120729 - 2⁵ = 115120697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115120697 and 115120706.

It is not an unprimeable number, because it can be changed into a prime (115121729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18504 + ... + 23929.

It is an arithmetic number, because the mean of its divisors is an integer number (28791469).

Almost surely, 2^115120729 is an apocalyptic number.

It is an amenable number.

115120729 is a deficient number, since it is larger than the sum of its proper divisors (45147).

115120729 is an equidigital number, since it uses as much as digits as its factorization.

115120729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45146.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 115120729 is about 10729.4328368279. The cubic root of 115120729 is about 486.4645270378.

The spelling of 115120729 in words is "one hundred fifteen million, one hundred twenty thousand, seven hundred twenty-nine".