140217457 has 8 divisors (see below), whose sum is σ = 144187200. Its totient is φ = 136257264.

The previous prime is 140217439. The next prime is 140217463. The reversal of 140217457 is 754712041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140217457 - 2¹¹ = 140215409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140217437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35844 + ... + 39562.

It is an arithmetic number, because the mean of its divisors is an integer number (18023400).

Almost surely, 2^140217457 is an apocalyptic number.

It is an amenable number.

140217457 is a deficient number, since it is larger than the sum of its proper divisors (3969743).

140217457 is a wasteful number, since it uses less digits than its factorization.

140217457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 140217457 is about 11841.3452360785. The cubic root of 140217457 is about 519.5181149647.

Adding to 140217457 its reverse (754712041), we get a palindrome (894929498).

The spelling of 140217457 in words is "one hundred forty million, two hundred seventeen thousand, four hundred fifty-seven".