40288919842 has 8 divisors (see below), whose sum is σ = 62517289500. Its totient is φ = 19449823344.

The previous prime is 40288919831. The next prime is 40288919851. The reversal of 40288919842 is 24891988204.

It is a Cunningham number, because it is equal to 200721²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 40288919841 + 1 = 200721^2 + 1^2 .

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, 347318217 + ... + 347318332.

Almost surely, 2^40288919842 is an apocalyptic number.

40288919842 is a deficient number, since it is larger than the sum of its proper divisors (22228369658).

40288919842 is a wasteful number, since it uses less digits than its factorization.

40288919842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694636580.

The product of its (nonzero) digits is 2654208, while the sum is 55.

It can be divided in two parts, 40 and 288919842, that added together give a palindrome (288919882).

The spelling of 40288919842 in words is "forty billion, two hundred eighty-eight million, nine hundred nineteen thousand, eight hundred forty-two".