115388421 has 8 divisors (see below), whose sum is σ = 153901824. Its totient is φ = 76900320.

The previous prime is 115388407. The next prime is 115388423. The reversal of 115388421 is 124883511.

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

It is not a de Polignac number, because 115388421 - 2¹⁹ = 114864133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115388423) 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, 11481 + ... + 19041.

It is an arithmetic number, because the mean of its divisors is an integer number (19237728).

Almost surely, 2^115388421 is an apocalyptic number.

It is an amenable number.

115388421 is a deficient number, since it is larger than the sum of its proper divisors (38513403).

115388421 is an equidigital number, since it uses as much as digits as its factorization.

115388421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12651.

The product of its digits is 7680, while the sum is 33.

The square root of 115388421 is about 10741.9002508867. The cubic root of 115388421 is about 486.8412962992.

The spelling of 115388421 in words is "one hundred fifteen million, three hundred eighty-eight thousand, four hundred twenty-one".