40243255 has 16 divisors (see below), whose sum is σ = 52476480. Its totient is φ = 29449728.

The previous prime is 40243253. The next prime is 40243279. The reversal of 40243255 is 55234204.

It is a cyclic number.

It is not a de Polignac number, because 40243255 - 2¹ = 40243253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4606 + ... + 10084.

It is an arithmetic number, because the mean of its divisors is an integer number (3279780).

Almost surely, 2^40243255 is an apocalyptic number.

40243255 is a deficient number, since it is larger than the sum of its proper divisors (12233225).

40243255 is a wasteful number, since it uses less digits than its factorization.

40243255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 40243255 is about 6343.7571674836. The cubic root of 40243255 is about 342.6870557235.

Adding to 40243255 its reverse (55234204), we get a palindrome (95477459).

The spelling of 40243255 in words is "forty million, two hundred forty-three thousand, two hundred fifty-five".