43140673 has 4 divisors (see below), whose sum is σ = 43198420. Its totient is φ = 43082928.

The previous prime is 43140667. The next prime is 43140683. The reversal of 43140673 is 37604134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32855824 + 10284849 = 5732^2 + 3207^2 .

It is a cyclic number.

It is not a de Polignac number, because 43140673 - 2¹⁷ = 43009601 is a prime.

It is a super-2 number, since 2×43140673² = 3722235333785858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43140683) 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, 27738 + ... + 29251.

It is an arithmetic number, because the mean of its divisors is an integer number (10799605).

Almost surely, 2^43140673 is an apocalyptic number.

It is an amenable number.

43140673 is a deficient number, since it is larger than the sum of its proper divisors (57747).

43140673 is an equidigital number, since it uses as much as digits as its factorization.

43140673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57746.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 43140673 is about 6568.1559817045. The cubic root of 43140673 is about 350.7214316672.

The spelling of 43140673 in words is "forty-three million, one hundred forty thousand, six hundred seventy-three".