140144533 has 4 divisors (see below), whose sum is σ = 141589420. Its totient is φ = 138699648.

The previous prime is 140144509. The next prime is 140144539. The reversal of 140144533 is 335441041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77053284 + 63091249 = 8778^2 + 7943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140144533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140144498 and 140144507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140144539) 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, 722298 + ... + 722491.

It is an arithmetic number, because the mean of its divisors is an integer number (35397355).

Almost surely, 2^140144533 is an apocalyptic number.

It is an amenable number.

140144533 is a deficient number, since it is larger than the sum of its proper divisors (1444887).

140144533 is an equidigital number, since it uses as much as digits as its factorization.

140144533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444886.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 140144533 is about 11838.2656246597. The cubic root of 140144533 is about 519.4280360508.

Adding to 140144533 its reverse (335441041), we get a palindrome (475585574).

The spelling of 140144533 in words is "one hundred forty million, one hundred forty-four thousand, five hundred thirty-three".