112743921 has 16 divisors (see below), whose sum is σ = 156928448. Its totient is φ = 71928000.

The previous prime is 112743913. The next prime is 112743947. The reversal of 112743921 is 129347211.

It is not a de Polignac number, because 112743921 - 2³ = 112743913 is a prime.

It is a super-2 number, since 2×112743921² = 25422383444908482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112743991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1555 + ... + 15096.

It is an arithmetic number, because the mean of its divisors is an integer number (9808028).

Almost surely, 2^112743921 is an apocalyptic number.

It is an amenable number.

112743921 is a deficient number, since it is larger than the sum of its proper divisors (44184527).

112743921 is a wasteful number, since it uses less digits than its factorization.

112743921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16752.

The product of its digits is 3024, while the sum is 30.

The square root of 112743921 is about 10618.0940380089. The cubic root of 112743921 is about 483.0933339858.

The spelling of 112743921 in words is "one hundred twelve million, seven hundred forty-three thousand, nine hundred twenty-one".