40220040242 has 8 divisors (see below), whose sum is σ = 61319077932. Its totient is φ = 19780347600.

The previous prime is 40220040233. The next prime is 40220040247. The reversal of 40220040242 is 24204002204.

It can be written as a sum of positive squares in 2 ways, for example, as 30272172121 + 9947868121 = 173989^2 + 99739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40220040247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164836109 + ... + 164836352.

Almost surely, 2^40220040242 is an apocalyptic number.

40220040242 is a deficient number, since it is larger than the sum of its proper divisors (21099037690).

40220040242 is a wasteful number, since it uses less digits than its factorization.

40220040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329672524.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40220040242 its reverse (24204002204), we get a palindrome (64424042446).

The spelling of 40220040242 in words is "forty billion, two hundred twenty million, forty thousand, two hundred forty-two".