115242189 has 8 divisors (see below), whose sum is σ = 154328160. Its totient is φ = 76492176.

The previous prime is 115242137. The next prime is 115242199. The reversal of 115242189 is 981242511.

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

It is not a de Polignac number, because 115242189 - 2¹² = 115238093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115242109) 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 7 ways as a sum of consecutive naturals, for example, 83187 + ... + 84560.

It is an arithmetic number, because the mean of its divisors is an integer number (19291020).

Almost surely, 2^115242189 is an apocalyptic number.

It is an amenable number.

115242189 is a deficient number, since it is larger than the sum of its proper divisors (39085971).

115242189 is a wasteful number, since it uses less digits than its factorization.

115242189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167979.

The product of its digits is 5760, while the sum is 33.

The square root of 115242189 is about 10735.0914760891. The cubic root of 115242189 is about 486.6355510120.

The spelling of 115242189 in words is "one hundred fifteen million, two hundred forty-two thousand, one hundred eighty-nine".