43140452 has 12 divisors (see below), whose sum is σ = 76559616. Its totient is φ = 21266280.

The previous prime is 43140451. The next prime is 43140467. The reversal of 43140452 is 25404134.

It is a super-2 number, since 2×43140452² = 3722197197528608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43140451) 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, 75668 + ... + 76235.

It is an arithmetic number, because the mean of its divisors is an integer number (6379968).

Almost surely, 2^43140452 is an apocalyptic number.

It is an amenable number.

43140452 is a deficient number, since it is larger than the sum of its proper divisors (33419164).

43140452 is a wasteful number, since it uses less digits than its factorization.

43140452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151978 (or 151976 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 43140452 is about 6568.1391580873. The cubic root of 43140452 is about 350.7208327771.

Adding to 43140452 its reverse (25404134), we get a palindrome (68544586).

The spelling of 43140452 in words is "forty-three million, one hundred forty thousand, four hundred fifty-two".