140010217 has 4 divisors (see below), whose sum is σ = 140508756. Its totient is φ = 139511680.

The previous prime is 140010209. The next prime is 140010239. The reversal of 140010217 is 712010041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78481881 + 61528336 = 8859^2 + 7844^2 .

It is a cyclic number.

It is not a de Polignac number, because 140010217 - 2³ = 140010209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140010217.

It is not an unprimeable number, because it can be changed into a prime (140010517) 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, 248848 + ... + 249409.

It is an arithmetic number, because the mean of its divisors is an integer number (35127189).

Almost surely, 2^140010217 is an apocalyptic number.

It is an amenable number.

140010217 is a deficient number, since it is larger than the sum of its proper divisors (498539).

140010217 is an equidigital number, since it uses as much as digits as its factorization.

140010217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498538.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 140010217 is about 11832.5913053735. The cubic root of 140010217 is about 519.2620412379.

Adding to 140010217 its reverse (712010041), we get a palindrome (852020258).

The spelling of 140010217 in words is "one hundred forty million, ten thousand, two hundred seventeen".