40321440242 has 32 divisors (see below), whose sum is σ = 65646307440. Its totient is φ = 18499461120.

The previous prime is 40321440199. The next prime is 40321440301. The reversal of 40321440242 is 24204412304.

It is a happy number.

40321440242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 27489308401 + 12832131841 = 165799^2 + 113279^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2233958 + ... + 2251934.

Almost surely, 2^40321440242 is an apocalyptic number.

40321440242 is a deficient number, since it is larger than the sum of its proper divisors (25324867198).

40321440242 is a wasteful number, since it uses less digits than its factorization.

40321440242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19646.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 40321440242 its reverse (24204412304), we get a palindrome (64525852546).

The spelling of 40321440242 in words is "forty billion, three hundred twenty-one million, four hundred forty thousand, two hundred forty-two".