43120013 has 16 divisors (see below), whose sum is σ = 46147200. Its totient is φ = 40219200.

The previous prime is 43120001. The next prime is 43120019. The reversal of 43120013 is 31002134.

It is a cyclic number.

It is not a de Polignac number, because 43120013 - 2¹⁴ = 43103629 is a prime.

It is a super-2 number, since 2×43120013² = 3718671042240338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43120013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43120019) 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, 188183 + ... + 188411.

It is an arithmetic number, because the mean of its divisors is an integer number (2884200).

Almost surely, 2^43120013 is an apocalyptic number.

43120013 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

43120013 is a deficient number, since it is larger than the sum of its proper divisors (3027187).

43120013 is a wasteful number, since it uses less digits than its factorization.

43120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 43120013 is about 6566.5830536132. The cubic root of 43120013 is about 350.6654360814.

Adding to 43120013 its reverse (31002134), we get a palindrome (74122147).

The spelling of 43120013 in words is "forty-three million, one hundred twenty thousand, thirteen".