112643261 has 8 divisors (see below), whose sum is σ = 113750520. Its totient is φ = 111541248.

The previous prime is 112643239. The next prime is 112643291. The reversal of 112643261 is 162346211.

It can be written as a sum of positive squares in 4 ways, for example, as 156025 + 112487236 = 395^2 + 10606^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 112643261 - 2⁶ = 112643197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112643261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112643231) 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, 51845 + ... + 53973.

It is an arithmetic number, because the mean of its divisors is an integer number (14218815).

Almost surely, 2^112643261 is an apocalyptic number.

It is an amenable number.

112643261 is a deficient number, since it is larger than the sum of its proper divisors (1107259).

112643261 is a wasteful number, since it uses less digits than its factorization.

112643261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623.

The product of its digits is 1728, while the sum is 26.

The square root of 112643261 is about 10613.3529574777. The cubic root of 112643261 is about 482.9495194196.

Adding to 112643261 its reverse (162346211), we get a palindrome (274989472).

The spelling of 112643261 in words is "one hundred twelve million, six hundred forty-three thousand, two hundred sixty-one".