1240666171 has 16 divisors (see below), whose sum is σ = 1334664000. Its totient is φ = 1149078528.

The previous prime is 1240666153. The next prime is 1240666201. The reversal of 1240666171 is 1716660421.

It is a cyclic number.

It is not a de Polignac number, because 1240666171 - 2¹⁵ = 1240633403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240666151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742525 + ... + 744193.

It is an arithmetic number, because the mean of its divisors is an integer number (83416500).

Almost surely, 2^1240666171 is an apocalyptic number.

1240666171 is a deficient number, since it is larger than the sum of its proper divisors (93997829).

1240666171 is a wasteful number, since it uses less digits than its factorization.

1240666171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1240666171 is about 35223.0914458115. The cubic root of 1240666171 is about 1074.5294269229.

The spelling of 1240666171 in words is "one billion, two hundred forty million, six hundred sixty-six thousand, one hundred seventy-one".