40243430 has 16 divisors (see below), whose sum is σ = 73805904. Its totient is φ = 15793440.

The previous prime is 40243417. The next prime is 40243459. The reversal of 40243430 is 3434204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37436 + ... + 38495.

It is an arithmetic number, because the mean of its divisors is an integer number (4612869).

Almost surely, 2^40243430 is an apocalyptic number.

40243430 is a deficient number, since it is larger than the sum of its proper divisors (33562474).

40243430 is a wasteful number, since it uses less digits than its factorization.

40243430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75991.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40243430 is about 6343.7709605565. The cubic root of 40243430 is about 342.6875524539.

Adding to 40243430 its reverse (3434204), we get a palindrome (43677634).

The spelling of 40243430 in words is "forty million, two hundred forty-three thousand, four hundred thirty".