40243212341 has 4 divisors (see below), whose sum is σ = 40260643500. Its totient is φ = 40225781184.

The previous prime is 40243212323. The next prime is 40243212349. The reversal of 40243212341 is 14321234204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20179623025 + 20063589316 = 142055^2 + 141646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40243212341 is a prime.

It is a super-2 number, since 2×40243212341² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40243212341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243212349) 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, 8712116 + ... + 8716733.

It is an arithmetic number, because the mean of its divisors is an integer number (10065160875).

Almost surely, 2^40243212341 is an apocalyptic number.

It is an amenable number.

40243212341 is a deficient number, since it is larger than the sum of its proper divisors (17431159).

40243212341 is a wasteful number, since it uses less digits than its factorization.

40243212341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17431158.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 40243212341 its reverse (14321234204), we get a palindrome (54564446545).

The spelling of 40243212341 in words is "forty billion, two hundred forty-three million, two hundred twelve thousand, three hundred forty-one".