115112421 has 10 divisors (see below), whose sum is σ = 171958182. Its totient is φ = 76741560.

The previous prime is 115112407. The next prime is 115112441. The reversal of 115112421 is 124211511.

It can be written as a sum of positive squares in only one way, i.e., 114704100 + 408321 = 10710^2 + 639^2 .

It is not a de Polignac number, because 115112421 - 2⁷ = 115112293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115112394 and 115112403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115112441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 710490 + ... + 710651.

Almost surely, 2^115112421 is an apocalyptic number.

It is an amenable number.

115112421 is a deficient number, since it is larger than the sum of its proper divisors (56845761).

115112421 is an equidigital number, since it uses as much as digits as its factorization.

115112421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421153 (or 1421144 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 115112421 is about 10729.0456705152. The cubic root of 115112421 is about 486.4528244118.

Adding to 115112421 its reverse (124211511), we get a palindrome (239323932).

The spelling of 115112421 in words is "one hundred fifteen million, one hundred twelve thousand, four hundred twenty-one".