115123405 has 8 divisors (see below), whose sum is σ = 146274552. Its totient is φ = 86681088.

The previous prime is 115123403. The next prime is 115123423. The reversal of 115123405 is 504321511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22905796 + 92217609 = 4786^2 + 9603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115123405 - 2¹ = 115123403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115123403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677112 + ... + 677281.

It is an arithmetic number, because the mean of its divisors is an integer number (18284319).

Almost surely, 2^115123405 is an apocalyptic number.

It is an amenable number.

115123405 is a deficient number, since it is larger than the sum of its proper divisors (31151147).

115123405 is a wasteful number, since it uses less digits than its factorization.

115123405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354415.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 115123405 is about 10729.5575398056. The cubic root of 115123405 is about 486.4682963242.

Adding to 115123405 its reverse (504321511), we get a palindrome (619444916).

The spelling of 115123405 in words is "one hundred fifteen million, one hundred twenty-three thousand, four hundred five".