115091421 has 4 divisors (see below), whose sum is σ = 153455232. Its totient is φ = 76727612.

The previous prime is 115091407. The next prime is 115091429. The reversal of 115091421 is 124190511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115091421 - 2⁷ = 115091293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115091391 and 115091400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115091429) 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 3 ways as a sum of consecutive naturals, for example, 19181901 + ... + 19181906.

It is an arithmetic number, because the mean of its divisors is an integer number (38363808).

Almost surely, 2^115091421 is an apocalyptic number.

It is an amenable number.

115091421 is a deficient number, since it is larger than the sum of its proper divisors (38363811).

115091421 is an equidigital number, since it uses as much as digits as its factorization.

115091421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38363810.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 115091421 is about 10728.0669740639. The cubic root of 115091421 is about 486.4232413587.

The spelling of 115091421 in words is "one hundred fifteen million, ninety-one thousand, four hundred twenty-one".