43402005 has 24 divisors (see below), whose sum is σ = 75528960. Its totient is φ = 23055840.

The previous prime is 43402001. The next prime is 43402013. The reversal of 43402005 is 50020434.

It is a happy number.

It is not a de Polignac number, because 43402005 - 2² = 43402001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43402001) 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 23 ways as a sum of consecutive naturals, for example, 10416 + ... + 13974.

It is an arithmetic number, because the mean of its divisors is an integer number (3147040).

Almost surely, 2^43402005 is an apocalyptic number.

43402005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43402005 is a deficient number, since it is larger than the sum of its proper divisors (32126955).

43402005 is a wasteful number, since it uses less digits than its factorization.

43402005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 43402005 is about 6588.0198087134. The cubic root of 43402005 is about 351.4281914814.

Adding to 43402005 its reverse (50020434), we get a palindrome (93422439).

The spelling of 43402005 in words is "forty-three million, four hundred two thousand, five".