40800243 has 16 divisors (see below), whose sum is σ = 59616000. Its totient is φ = 24614880.

The previous prime is 40800241. The next prime is 40800251. The reversal of 40800243 is 34200804.

It is a happy number.

It is not a de Polignac number, because 40800243 - 2¹ = 40800241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40800241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4858 + ... + 10256.

It is an arithmetic number, because the mean of its divisors is an integer number (3726000).

Almost surely, 2^40800243 is an apocalyptic number.

40800243 is a deficient number, since it is larger than the sum of its proper divisors (18815757).

40800243 is a wasteful number, since it uses less digits than its factorization.

40800243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40800243 is about 6387.5067906030. The cubic root of 40800243 is about 344.2608076015.

The spelling of 40800243 in words is "forty million, eight hundred thousand, two hundred forty-three".