40104243243 has 12 divisors (see below), whose sum is σ = 57946444920. Its totient is φ = 26727811296.

The previous prime is 40104243241. The next prime is 40104243251. The reversal of 40104243243 is 34234240104.

It is a happy number.

It is not a de Polignac number, because 40104243243 - 2¹ = 40104243241 is a prime.

It is a super-2 number, since 2×40104243243² (a number of 22 digits) contains 22 as substring.

40104243243 is a modest number, since divided by 243243 gives 40104 as remainder.

It is not an unprimeable number, because it can be changed into a prime (40104243241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 665421 + ... + 723182.

It is an arithmetic number, because the mean of its divisors is an integer number (4828870410).

Almost surely, 2^40104243243 is an apocalyptic number.

40104243243 is a deficient number, since it is larger than the sum of its proper divisors (17842201677).

40104243243 is a wasteful number, since it uses less digits than its factorization.

40104243243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391818 (or 1391815 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40104243243 its reverse (34234240104), we get a palindrome (74338483347).

The spelling of 40104243243 in words is "forty billion, one hundred four million, two hundred forty-three thousand, two hundred forty-three".