43134640 has 40 divisors (see below), whose sum is σ = 103529088. Its totient is φ = 16696320.

The previous prime is 43134631. The next prime is 43134647. The reversal of 43134640 is 4643134.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (43134647) 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 7 ways as a sum of consecutive naturals, for example, 6217 + ... + 11176.

Almost surely, 2^43134640 is an apocalyptic number.

43134640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43134640 is an abundant number, since it is smaller than the sum of its proper divisors (60394448).

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

43134640 is a wasteful number, since it uses less digits than its factorization.

43134640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17437 (or 17431 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 43134640 is about 6567.6967043249. The cubic root of 43134640 is about 350.7050820456.

Adding to 43134640 its reverse (4643134), we get a palindrome (47777774).

The spelling of 43134640 in words is "forty-three million, one hundred thirty-four thousand, six hundred forty".