40242433243 has 2 divisors, whose sum is σ = 40242433244. Its totient is φ = 40242433242.

The previous prime is 40242433237. The next prime is 40242433417. The reversal of 40242433243 is 34233424204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40242433243 - 2⁵ = 40242433211 is a prime.

It is a super-2 number, since 2×40242433243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40242463243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121216621 + 20121216622.

It is an arithmetic number, because the mean of its divisors is an integer number (20121216622).

Almost surely, 2^40242433243 is an apocalyptic number.

40242433243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242433243 is an equidigital number, since it uses as much as digits as its factorization.

40242433243 is an evil number, because the sum of its binary digits is even.

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

Adding to 40242433243 its reverse (34233424204), we get a palindrome (74475857447).

The spelling of 40242433243 in words is "forty billion, two hundred forty-two million, four hundred thirty-three thousand, two hundred forty-three".