40243450 has 48 divisors (see below), whose sum is σ = 81541656. Its totient is φ = 14688000.

The previous prime is 40243417. The next prime is 40243459. The reversal of 40243450 is 5434204.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 9801 + 40233649 = 99^2 + 6343^2 .

It is not an unprimeable number, because it can be changed into a prime (40243459) 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, 65344 + ... + 65956.

Almost surely, 2^40243450 is an apocalyptic number.

40243450 is an abundant number, since it is smaller than the sum of its proper divisors (41298206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40243450 is a wasteful number, since it uses less digits than its factorization.

40243450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40243450 is about 6343.7725369058. The cubic root of 40243450 is about 342.6876092230.

Adding to 40243450 its reverse (5434204), we get a palindrome (45677654).

The spelling of 40243450 in words is "forty million, two hundred forty-three thousand, four hundred fifty".