140857 has 4 divisors (see below), whose sum is σ = 142720. Its totient is φ = 138996.

The previous prime is 140839. The next prime is 140863. The reversal of 140857 is 758041.

140857 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140857 - 2⁷ = 140729 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140827) 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, 813 + ... + 970.

It is an arithmetic number, because the mean of its divisors is an integer number (35680).

2¹⁴⁰⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

140857 is a deficient number, since it is larger than the sum of its proper divisors (1863).

140857 is an equidigital number, since it uses as much as digits as its factorization.

140857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 140857 is about 375.3092058557. The cubic root of 140857 is about 52.0306771649.

Adding to 140857 its reverse (758041), we get a palindrome (898898).

The spelling of 140857 in words is "one hundred forty thousand, eight hundred fifty-seven".