40126663 has 2 divisors, whose sum is σ = 40126664. Its totient is φ = 40126662.

The previous prime is 40126631. The next prime is 40126687. The reversal of 40126663 is 36662104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40126663 - 2⁵ = 40126631 is a prime.

It is a super-2 number, since 2×40126663² = 3220298167031138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40126693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20063331 + 20063332.

It is an arithmetic number, because the mean of its divisors is an integer number (20063332).

Almost surely, 2^40126663 is an apocalyptic number.

40126663 is a deficient number, since it is larger than the sum of its proper divisors (1).

40126663 is an equidigital number, since it uses as much as digits as its factorization.

40126663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40126663 is about 6334.5609950493. The cubic root of 40126663 is about 342.3557934483.

Adding to 40126663 its reverse (36662104), we get a palindrome (76788767).

The spelling of 40126663 in words is "forty million, one hundred twenty-six thousand, six hundred sixty-three".