43140466 has 4 divisors (see below), whose sum is σ = 64710702. Its totient is φ = 21570232.

The previous prime is 43140451. The next prime is 43140467. The reversal of 43140466 is 66404134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66404134 = 2 ⋅33202067.

It can be written as a sum of positive squares in only one way, i.e., 35462025 + 7678441 = 5955^2 + 2771^2 .

It is a super-2 number, since 2×43140466² = 3722199613394312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43140467) 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 as a sum of consecutive naturals, namely, 10785115 + ... + 10785118.

Almost surely, 2^43140466 is an apocalyptic number.

43140466 is a deficient number, since it is larger than the sum of its proper divisors (21570236).

43140466 is a wasteful number, since it uses less digits than its factorization.

43140466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21570235.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 43140466 is about 6568.1402238381. The cubic root of 43140466 is about 350.7208707159.

The spelling of 43140466 in words is "forty-three million, one hundred forty thousand, four hundred sixty-six".