43140403212012 has 24 divisors (see below), whose sum is σ = 111845489809200. Its totient is φ = 14380134403968.

The previous prime is 43140403211993. The next prime is 43140403212019. The reversal of 43140403212012 is 21021230404134.

43140403212012 is a `hidden beast` number, since 4 + 3 + 1 + 40 + 403 + 212 + 0 + 1 + 2 = 666.

It is a super-2 number, since 2×43140403212012² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43140403212019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199724088837 + ... + 199724089052.

It is an arithmetic number, because the mean of its divisors is an integer number (4660228742050).

Almost surely, 2^{43140403212012} is an apocalyptic number.

It is an amenable number.

43140403212012 is an abundant number, since it is smaller than the sum of its proper divisors (68705086597188).

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

43140403212012 is a wasteful number, since it uses less digits than its factorization.

43140403212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399448177902 (or 399448177894 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 43140403212012 its reverse (21021230404134), we get a palindrome (64161633616146).

The spelling of 43140403212012 in words is "forty-three trillion, one hundred forty billion, four hundred three million, two hundred twelve thousand, twelve".