40100129 has 2 divisors, whose sum is σ = 40100130. Its totient is φ = 40100128.

The previous prime is 40100113. The next prime is 40100147. The reversal of 40100129 is 92100104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37540129 + 2560000 = 6127^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 40100129 - 2⁴ = 40100113 is a prime.

It is not a weakly prime, because it can be changed into another prime (40100149) 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, 20050064 + 20050065.

It is an arithmetic number, because the mean of its divisors is an integer number (20050065).

Almost surely, 2^40100129 is an apocalyptic number.

It is an amenable number.

40100129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100129 is an equidigital number, since it uses as much as digits as its factorization.

40100129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 40100129 is about 6332.4662652082. The cubic root of 40100129 is about 342.2803151921.

The spelling of 40100129 in words is "forty million, one hundred thousand, one hundred twenty-nine".