40126897 has 2 divisors, whose sum is σ = 40126898. Its totient is φ = 40126896.

The previous prime is 40126873. The next prime is 40126901. The reversal of 40126897 is 79862104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39929761 + 197136 = 6319^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 40126897 - 2¹⁹ = 39602609 is a prime.

It is a super-2 number, since 2×40126897² = 3220335725697218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40126847) 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, 20063448 + 20063449.

It is an arithmetic number, because the mean of its divisors is an integer number (20063449).

Almost surely, 2^40126897 is an apocalyptic number.

It is an amenable number.

40126897 is a deficient number, since it is larger than the sum of its proper divisors (1).

40126897 is an equidigital number, since it uses as much as digits as its factorization.

40126897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 40126897 is about 6334.5794651263. The cubic root of 40126897 is about 342.3564589335.

The spelling of 40126897 in words is "forty million, one hundred twenty-six thousand, eight hundred ninety-seven".