40020244442 has 8 divisors (see below), whose sum is σ = 63561564756. Its totient is φ = 18833056192.

The previous prime is 40020244373. The next prime is 40020244447. The reversal of 40020244442 is 24444202004.

It can be written as a sum of positive squares in 2 ways, for example, as 38541149761 + 1479094681 = 196319^2 + 38459^2 .

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 (40020244447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588532973 + ... + 588533040.

Almost surely, 2^40020244442 is an apocalyptic number.

40020244442 is a deficient number, since it is larger than the sum of its proper divisors (23541320314).

40020244442 is a wasteful number, since it uses less digits than its factorization.

40020244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177066032.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 40020244442 its reverse (24444202004), we get a palindrome (64464446446).

The spelling of 40020244442 in words is "forty billion, twenty million, two hundred forty-four thousand, four hundred forty-two".