140807 has 4 divisors (see below), whose sum is σ = 141960. Its totient is φ = 139656.
The previous prime is 140797. The next prime is 140813. The reversal of 140807 is 708041.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 140807 - 28 = 140551 is a prime.
It is a super-2 number, since 2×1408072 = 39653222498, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140807.
It is not an unprimeable number, because it can be changed into a prime (140827) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368 + ... + 645.
It is an arithmetic number, because the mean of its divisors is an integer number (35490).
2140807 is an apocalyptic number.
140807 is a deficient number, since it is larger than the sum of its proper divisors (1153).
140807 is a wasteful number, since it uses less digits than its factorization.
140807 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1152.
The product of its (nonzero) digits is 224, while the sum is 20.
The square root of 140807 is about 375.2425882013. The cubic root of 140807 is about 52.0245199943.
Adding to 140807 its reverse (708041), we get a palindrome (848848).
The spelling of 140807 in words is "one hundred forty thousand, eight hundred seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •