32400043 has 4 divisors (see below), whose sum is σ = 34892368. Its totient is φ = 29907720.

The previous prime is 32400029. The next prime is 32400059. The reversal of 32400043 is 34000423.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32400043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32400023) 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, 1246143 + ... + 1246168.

It is an arithmetic number, because the mean of its divisors is an integer number (8723092).

Almost surely, 2^32400043 is an apocalyptic number.

32400043 is a deficient number, since it is larger than the sum of its proper divisors (2492325).

32400043 is a wasteful number, since it uses less digits than its factorization.

32400043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492324.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 32400043 is about 5692.1035654668. The cubic root of 32400043 is about 318.7977117866.

Adding to 32400043 its reverse (34000423), we get a palindrome (66400466).

The spelling of 32400043 in words is "thirty-two million, four hundred thousand, forty-three".