113752129 has 4 divisors (see below), whose sum is σ = 115616980. Its totient is φ = 111887280.

The previous prime is 113752127. The next prime is 113752139. The reversal of 113752129 is 921257311.

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 16769025 + 96983104 = 4095^2 + 9848^2 .

It is a cyclic number.

It is not a de Polignac number, because 113752129 - 2¹ = 113752127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113752129.

It is not an unprimeable number, because it can be changed into a prime (113752127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932334 + ... + 932455.

It is an arithmetic number, because the mean of its divisors is an integer number (28904245).

Almost surely, 2^113752129 is an apocalyptic number.

It is an amenable number.

113752129 is a deficient number, since it is larger than the sum of its proper divisors (1864851).

113752129 is an equidigital number, since it uses as much as digits as its factorization.

113752129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864850.

The product of its digits is 3780, while the sum is 31.

The square root of 113752129 is about 10665.4643124432. The cubic root of 113752129 is about 484.5290770275.

The spelling of 113752129 in words is "one hundred thirteen million, seven hundred fifty-two thousand, one hundred twenty-nine".