40243492 has 12 divisors (see below), whose sum is σ = 70470540. Its totient is φ = 20109056.

The previous prime is 40243477. The next prime is 40243499. The reversal of 40243492 is 29434204.

It can be written as a sum of positive squares in 2 ways, for example, as 35808256 + 4435236 = 5984^2 + 2106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40243492.

It is not an unprimeable number, because it can be changed into a prime (40243499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10728 + ... + 13984.

It is an arithmetic number, because the mean of its divisors is an integer number (5872545).

Almost surely, 2^40243492 is an apocalyptic number.

It is an amenable number.

40243492 is a deficient number, since it is larger than the sum of its proper divisors (30227048).

40243492 is a wasteful number, since it uses less digits than its factorization.

40243492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6350 (or 6348 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40243492 is about 6343.7758472380. The cubic root of 40243492 is about 342.6877284381.

Adding to 40243492 its reverse (29434204), we get a palindrome (69677696).

The spelling of 40243492 in words is "forty million, two hundred forty-three thousand, four hundred ninety-two".