43140015 has 12 divisors (see below), whose sum is σ = 74776104. Its totient is φ = 23007984.

The previous prime is 43140011. The next prime is 43140037. The reversal of 43140015 is 51004134.

It is a happy number.

43140015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43140015 - 2² = 43140011 is a prime.

It is a super-3 number, since 3×43140015³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 43140015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43140011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479289 + ... + 479378.

It is an arithmetic number, because the mean of its divisors is an integer number (6231342).

Almost surely, 2^43140015 is an apocalyptic number.

43140015 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43140015 is a deficient number, since it is larger than the sum of its proper divisors (31636089).

43140015 is a wasteful number, since it uses less digits than its factorization.

43140015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958678 (or 958675 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 43140015 is about 6568.1058913510. The cubic root of 43140015 is about 350.7196485403.

Adding to 43140015 its reverse (51004134), we get a palindrome (94144149).

The spelling of 43140015 in words is "forty-three million, one hundred forty thousand, fifteen".