115127421 has 4 divisors (see below), whose sum is σ = 153503232. Its totient is φ = 76751612.

The previous prime is 115127407. The next prime is 115127429. The reversal of 115127421 is 124721511.

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 115127421 - 2⁶ = 115127357 is a prime.

It is a super-2 number, since 2×115127421² = 26508646132222482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115127391 and 115127400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115127429) 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, 19187901 + ... + 19187906.

It is an arithmetic number, because the mean of its divisors is an integer number (38375808).

Almost surely, 2^115127421 is an apocalyptic number.

It is an amenable number.

115127421 is a deficient number, since it is larger than the sum of its proper divisors (38375811).

115127421 is an equidigital number, since it uses as much as digits as its factorization.

115127421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38375810.

The product of its digits is 560, while the sum is 24.

The square root of 115127421 is about 10729.7446847537. The cubic root of 115127421 is about 486.4739529613.

Adding to 115127421 its reverse (124721511), we get a palindrome (239848932).

The spelling of 115127421 in words is "one hundred fifteen million, one hundred twenty-seven thousand, four hundred twenty-one".