40281129 has 24 divisors (see below), whose sum is σ = 67629120. Its totient is φ = 22625568.

The previous prime is 40281103. The next prime is 40281139. The reversal of 40281129 is 92118204.

It is not a de Polignac number, because 40281129 - 2¹⁵ = 40248361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40281139) 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 in 23 ways as a sum of consecutive naturals, for example, 1702 + ... + 9135.

It is an arithmetic number, because the mean of its divisors is an integer number (2817880).

Almost surely, 2^40281129 is an apocalyptic number.

It is an amenable number.

40281129 is a deficient number, since it is larger than the sum of its proper divisors (27347991).

40281129 is a wasteful number, since it uses less digits than its factorization.

40281129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10909 (or 10906 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 40281129 is about 6346.7416049497. The cubic root of 40281129 is about 342.7945259904.

The spelling of 40281129 in words is "forty million, two hundred eighty-one thousand, one hundred twenty-nine".