10400043 has 4 divisors (see below), whose sum is σ = 13866728. Its totient is φ = 6933360.

The previous prime is 10400029. The next prime is 10400057. The reversal of 10400043 is 34000401.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (10400029) and next prime (10400057).

It is not a de Polignac number, because 10400043 - 2⁹ = 10399531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10400443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733338 + ... + 1733343.

It is an arithmetic number, because the mean of its divisors is an integer number (3466682).

Almost surely, 2^10400043 is an apocalyptic number.

10400043 is a deficient number, since it is larger than the sum of its proper divisors (3466685).

10400043 is an equidigital number, since it uses as much as digits as its factorization.

10400043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466684.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 10400043 is about 3224.9097661795. The cubic root of 10400043 is about 218.2788774445.

Adding to 10400043 its reverse (34000401), we get a palindrome (44400444).

The spelling of 10400043 in words is "ten million, four hundred thousand, forty-three".