240664129 has 8 divisors (see below), whose sum is σ = 248755712. Its totient is φ = 232593120.

The previous prime is 240664117. The next prime is 240664133. The reversal of 240664129 is 921466042.

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 240664129 - 2⁷ = 240664001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240664094 and 240664103.

It is not an unprimeable number, because it can be changed into a prime (240664139) 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, 20797 + ... + 30229.

It is an arithmetic number, because the mean of its divisors is an integer number (31094464).

Almost surely, 2^240664129 is an apocalyptic number.

It is an amenable number.

240664129 is a deficient number, since it is larger than the sum of its proper divisors (8091583).

240664129 is an equidigital number, since it uses as much as digits as its factorization.

240664129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 240664129 is about 15513.3532480892. The cubic root of 240664129 is about 622.0191963761.

The spelling of 240664129 in words is "two hundred forty million, six hundred sixty-four thousand, one hundred twenty-nine".