140823 has 6 divisors (see below), whose sum is σ = 203424. Its totient is φ = 93876.

The previous prime is 140813. The next prime is 140827. The reversal of 140823 is 328041.

It is a happy number.

It is not a de Polignac number, because 140823 - 2⁶ = 140759 is a prime.

It is a super-2 number, since 2×140823² = 39662234658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140796 and 140805.

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 5 ways as a sum of consecutive naturals, for example, 7815 + ... + 7832.

It is an arithmetic number, because the mean of its divisors is an integer number (33904).

2¹⁴⁰⁸²³ is an apocalyptic number.

140823 is a deficient number, since it is larger than the sum of its proper divisors (62601).

140823 is a wasteful number, since it uses less digits than its factorization.

140823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15653 (or 15650 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140823 is about 375.2639071374. The cubic root of 140823 is about 52.0264904474.

Adding to 140823 its reverse (328041), we get a palindrome (468864).

It can be divided in two parts, 1408 and 23, that added together give a triangular number (1431 = T₅₃).

The spelling of 140823 in words is "one hundred forty thousand, eight hundred twenty-three".