40680243 has 12 divisors (see below), whose sum is σ = 60786960. Its totient is φ = 26184816.

The previous prime is 40680187. The next prime is 40680251. The reversal of 40680243 is 34208604.

It is not a de Polignac number, because 40680243 - 2⁶ = 40680179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40680943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77671 + ... + 78192.

It is an arithmetic number, because the mean of its divisors is an integer number (5065580).

Almost surely, 2^40680243 is an apocalyptic number.

40680243 is a deficient number, since it is larger than the sum of its proper divisors (20106717).

40680243 is a wasteful number, since it uses less digits than its factorization.

40680243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155898 (or 155895 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40680243 is about 6378.1065372099. The cubic root of 40680243 is about 343.9229675855.

Adding to 40680243 its reverse (34208604), we get a palindrome (74888847).

The spelling of 40680243 in words is "forty million, six hundred eighty thousand, two hundred forty-three".