43140412 has 48 divisors (see below), whose sum is σ = 92010240. Its totient is φ = 17286912.

The previous prime is 43140403. The next prime is 43140413. The reversal of 43140412 is 21404134.

It is a super-2 number, since 2×43140412² = 3722190295059488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 43140412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43140413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43668 + ... + 44644.

It is an arithmetic number, because the mean of its divisors is an integer number (1916880).

Almost surely, 2^43140412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43140412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46005120).

43140412 is an abundant number, since it is smaller than the sum of its proper divisors (48869828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43140412 is a wasteful number, since it uses less digits than its factorization.

43140412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 43140412 is about 6568.1361130841. The cubic root of 43140412 is about 350.7207243804.

Adding to 43140412 its reverse (21404134), we get a palindrome (64544546).

The spelling of 43140412 in words is "forty-three million, one hundred forty thousand, four hundred twelve".