115565642 has 4 divisors (see below), whose sum is σ = 173348466. Its totient is φ = 57782820.

The previous prime is 115565641. The next prime is 115565651. The reversal of 115565642 is 246565511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96020401 + 19545241 = 9799^2 + 4421^2 .

It is a super-2 number, since 2×115565642² = 26710835221744328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115565641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28891409 + ... + 28891412.

Almost surely, 2^115565642 is an apocalyptic number.

115565642 is a deficient number, since it is larger than the sum of its proper divisors (57782824).

115565642 is an equidigital number, since it uses as much as digits as its factorization.

115565642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57782823.

The product of its digits is 36000, while the sum is 35.

The square root of 115565642 is about 10750.1461385416. The cubic root of 115565642 is about 487.0904095915.

The spelling of 115565642 in words is "one hundred fifteen million, five hundred sixty-five thousand, six hundred forty-two".