140217417 has 12 divisors (see below), whose sum is σ = 207476724. Its totient is φ = 91198080.

The previous prime is 140217409. The next prime is 140217419. The reversal of 140217417 is 714712041.

It can be written as a sum of positive squares in 2 ways, for example, as 56385081 + 83832336 = 7509^2 + 9156^2 .

It is not a de Polignac number, because 140217417 - 2³ = 140217409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140217419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189628 + ... + 190365.

It is an arithmetic number, because the mean of its divisors is an integer number (17289727).

Almost surely, 2^140217417 is an apocalyptic number.

It is an amenable number.

140217417 is a deficient number, since it is larger than the sum of its proper divisors (67259307).

140217417 is a wasteful number, since it uses less digits than its factorization.

140217417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380040 (or 380037 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 140217417 is about 11841.3435470811. The cubic root of 140217417 is about 519.5180655635.

Adding to 140217417 its reverse (714712041), we get a palindrome (854929458).

The spelling of 140217417 in words is "one hundred forty million, two hundred seventeen thousand, four hundred seventeen".