8040243 has 16 divisors (see below), whose sum is σ = 11059200. Its totient is φ = 5193216.

The previous prime is 8040239. The next prime is 8040247. The reversal of 8040243 is 3420408.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8040239) and next prime (8040247).

It is not a de Polignac number, because 8040243 - 2² = 8040239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8040247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17683 + ... + 18131.

It is an arithmetic number, because the mean of its divisors is an integer number (691200).

Almost surely, 2^8040243 is an apocalyptic number.

8040243 is a deficient number, since it is larger than the sum of its proper divisors (3018957).

8040243 is a wasteful number, since it uses less digits than its factorization.

8040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

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

The square root of 8040243 is about 2835.5322251740. The cubic root of 8040243 is about 200.3347975735.

The spelling of 8040243 in words is "eight million, forty thousand, two hundred forty-three".