140500217 has 16 divisors (see below), whose sum is σ = 165705792. Its totient is φ = 117443520.

The previous prime is 140500207. The next prime is 140500271. The reversal of 140500217 is 712005041.

It is a cyclic number.

It is not a de Polignac number, because 140500217 - 2⁴ = 140500201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140500207) 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, 37838 + ... + 41384.

It is an arithmetic number, because the mean of its divisors is an integer number (10356612).

Almost surely, 2^140500217 is an apocalyptic number.

It is an amenable number.

140500217 is a deficient number, since it is larger than the sum of its proper divisors (25205575).

140500217 is a wasteful number, since it uses less digits than its factorization.

140500217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 140500217 is about 11853.2787447187. The cubic root of 140500217 is about 519.8670974457.

Adding to 140500217 its reverse (712005041), we get a palindrome (852505258).

The spelling of 140500217 in words is "one hundred forty million, five hundred thousand, two hundred seventeen".