240166001 has 4 divisors (see below), whose sum is σ = 246657012. Its totient is φ = 233674992.

The previous prime is 240165979. The next prime is 240166013. The reversal of 240166001 is 100661042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100661042 = 2 ⋅50330521.

It can be written as a sum of positive squares in 2 ways, for example, as 170276401 + 69889600 = 13049^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 240166001 - 2¹⁴ = 240149617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240166301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245450 + ... + 3245523.

It is an arithmetic number, because the mean of its divisors is an integer number (61664253).

Almost surely, 2^240166001 is an apocalyptic number.

It is an amenable number.

240166001 is a deficient number, since it is larger than the sum of its proper divisors (6491011).

240166001 is an equidigital number, since it uses as much as digits as its factorization.

240166001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6491010.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 240166001 is about 15497.2901179529. The cubic root of 240166001 is about 621.5897469760.

The spelling of 240166001 in words is "two hundred forty million, one hundred sixty-six thousand, one".