40234432243 has 32 divisors (see below), whose sum is σ = 45246159360. Its totient is φ = 35597802240.

The previous prime is 40234432229. The next prime is 40234432247. The reversal of 40234432243 is 34223443204.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40234432243 is a prime.

It is a super-2 number, since 2×40234432243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40234432247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4882855 + ... + 4891087.

It is an arithmetic number, because the mean of its divisors is an integer number (1413942480).

Almost surely, 2^40234432243 is an apocalyptic number.

40234432243 is a deficient number, since it is larger than the sum of its proper divisors (5011727117).

40234432243 is a wasteful number, since it uses less digits than its factorization.

40234432243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 40234432243 its reverse (34223443204), we get a palindrome (74457875447).

The spelling of 40234432243 in words is "forty billion, two hundred thirty-four million, four hundred thirty-two thousand, two hundred forty-three".