140530423 has 16 divisors (see below), whose sum is σ = 158943744. Its totient is φ = 123140160.

The previous prime is 140530421. The next prime is 140530447. The reversal of 140530423 is 324035041.

It is not a de Polignac number, because 140530423 - 2¹ = 140530421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140530394 and 140530403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140530421) 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 15 ways as a sum of consecutive naturals, for example, 32611 + ... + 36667.

It is an arithmetic number, because the mean of its divisors is an integer number (9933984).

Almost surely, 2^140530423 is an apocalyptic number.

140530423 is a deficient number, since it is larger than the sum of its proper divisors (18413321).

140530423 is a wasteful number, since it uses less digits than its factorization.

140530423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 140530423 is about 11854.5528384667. The cubic root of 140530423 is about 519.9043500106.

Adding to 140530423 its reverse (324035041), we get a palindrome (464565464).

The spelling of 140530423 in words is "one hundred forty million, five hundred thirty thousand, four hundred twenty-three".