40243250 has 48 divisors (see below), whose sum is σ = 80171208. Its totient is φ = 15123200.

The previous prime is 40243243. The next prime is 40243253. The reversal of 40243250 is 5234204.

It can be written as a sum of positive squares in 12 ways, for example, as 1018081 + 39225169 = 1009^2 + 6263^2 .

It is a Curzon number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71972 + ... + 72528.

Almost surely, 2^40243250 is an apocalyptic number.

40243250 is a deficient number, since it is larger than the sum of its proper divisors (39927958).

40243250 is a wasteful number, since it uses less digits than its factorization.

40243250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40243250 is about 6343.7567733954. The cubic root of 40243250 is about 342.6870415312.

Adding to 40243250 its reverse (5234204), we get a palindrome (45477454).

The spelling of 40243250 in words is "forty million, two hundred forty-three thousand, two hundred fifty".