240340129 has 8 divisors (see below), whose sum is σ = 242505000. Its totient is φ = 238182912.

The previous prime is 240340127. The next prime is 240340159. The reversal of 240340129 is 921043042.

It can be written as a sum of positive squares in 4 ways, for example, as 59706529 + 180633600 = 7727^2 + 13440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240340129 - 2¹ = 240340127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240340127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74257 + ... + 77425.

It is an arithmetic number, because the mean of its divisors is an integer number (30313125).

Almost surely, 2^240340129 is an apocalyptic number.

It is an amenable number.

240340129 is a deficient number, since it is larger than the sum of its proper divisors (2164871).

240340129 is a wasteful number, since it uses less digits than its factorization.

240340129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 240340129 is about 15502.9071144737. The cubic root of 240340129 is about 621.7399348062.

The spelling of 240340129 in words is "two hundred forty million, three hundred forty thousand, one hundred twenty-nine".