40535129 has 2 divisors, whose sum is σ = 40535130. Its totient is φ = 40535128.

The previous prime is 40535083. The next prime is 40535153. The reversal of 40535129 is 92153504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40513225 + 21904 = 6365^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 40535129 - 2¹² = 40531033 is a prime.

It is not a weakly prime, because it can be changed into another prime (40535179) 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, 20267564 + 20267565.

It is an arithmetic number, because the mean of its divisors is an integer number (20267565).

Almost surely, 2^40535129 is an apocalyptic number.

It is an amenable number.

40535129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40535129 is an equidigital number, since it uses as much as digits as its factorization.

40535129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 40535129 is about 6366.7204273472. The cubic root of 40535129 is about 343.5135346071.

The spelling of 40535129 in words is "forty million, five hundred thirty-five thousand, one hundred twenty-nine".