111995243 has 4 divisors (see below), whose sum is σ = 112269480. Its totient is φ = 111721008.

The previous prime is 111995239. The next prime is 111995249. The reversal of 111995243 is 342599111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111995243 - 2² = 111995239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111995249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136505 + ... + 137322.

It is an arithmetic number, because the mean of its divisors is an integer number (28067370).

Almost surely, 2^111995243 is an apocalyptic number.

111995243 is a deficient number, since it is larger than the sum of its proper divisors (274237).

111995243 is an equidigital number, since it uses as much as digits as its factorization.

111995243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274236.

The product of its digits is 9720, while the sum is 35.

The square root of 111995243 is about 10582.7804947471. The cubic root of 111995243 is about 482.0216283058.

The spelling of 111995243 in words is "one hundred eleven million, nine hundred ninety-five thousand, two hundred forty-three".