43740113 has 4 divisors (see below), whose sum is σ = 44191140. Its totient is φ = 43289088.

The previous prime is 43740077. The next prime is 43740121. The reversal of 43740113 is 31104734.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31104734 = 2 ⋅15552367.

It can be written as a sum of positive squares in 2 ways, for example, as 28121809 + 15618304 = 5303^2 + 3952^2 .

It is a cyclic number.

It is not a de Polignac number, because 43740113 - 2⁶ = 43740049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43740143) 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, 225368 + ... + 225561.

It is an arithmetic number, because the mean of its divisors is an integer number (11047785).

Almost surely, 2^43740113 is an apocalyptic number.

It is an amenable number.

43740113 is a deficient number, since it is larger than the sum of its proper divisors (451027).

43740113 is an equidigital number, since it uses as much as digits as its factorization.

43740113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451026.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 43740113 is about 6613.6308484825. The cubic root of 43740113 is about 352.3383911206.

Adding to 43740113 its reverse (31104734), we get a palindrome (74844847).

The spelling of 43740113 in words is "forty-three million, seven hundred forty thousand, one hundred thirteen".