115121403 has 12 divisors (see below), whose sum is σ = 166815168. Its totient is φ = 76503600.

The previous prime is 115121341. The next prime is 115121431. The reversal of 115121403 is 304121511.

115121403 is a `hidden beast` number, since 11 + 512 + 140 + 3 = 666.

It is not a de Polignac number, because 115121403 - 2⁸ = 115121147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115121453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17323 + ... + 23028.

It is an arithmetic number, because the mean of its divisors is an integer number (13901264).

Almost surely, 2^115121403 is an apocalyptic number.

115121403 is a deficient number, since it is larger than the sum of its proper divisors (51693765).

115121403 is a wasteful number, since it uses less digits than its factorization.

115121403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40674 (or 40671 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 115121403 is about 10729.4642457114. The cubic root of 115121403 is about 486.4654764077.

Adding to 115121403 its reverse (304121511), we get a palindrome (419242914).

The spelling of 115121403 in words is "one hundred fifteen million, one hundred twenty-one thousand, four hundred three".