40042244402 has 8 divisors (see below), whose sum is σ = 60154236012. Its totient is φ = 19990832400.

The previous prime is 40042244339. The next prime is 40042244419. The reversal of 40042244402 is 20444224004.

It can be written as a sum of positive squares in 2 ways, for example, as 38659817641 + 1382426761 = 196621^2 + 37181^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15143249 + ... + 15145892.

Almost surely, 2^40042244402 is an apocalyptic number.

40042244402 is a deficient number, since it is larger than the sum of its proper divisors (20111991610).

40042244402 is a wasteful number, since it uses less digits than its factorization.

40042244402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30289804.

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

Adding to 40042244402 its reverse (20444224004), we get a palindrome (60486468406).

The spelling of 40042244402 in words is "forty billion, forty-two million, two hundred forty-four thousand, four hundred two".