140144653 has 4 divisors (see below), whose sum is σ = 152885088. Its totient is φ = 127404220.

The previous prime is 140144639. The next prime is 140144659. The reversal of 140144653 is 356441041.

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 a de Polignac number, because none of the positive numbers 2^k-140144653 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 (140144659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6370201 + ... + 6370222.

It is an arithmetic number, because the mean of its divisors is an integer number (38221272).

Almost surely, 2^140144653 is an apocalyptic number.

It is an amenable number.

140144653 is a deficient number, since it is larger than the sum of its proper divisors (12740435).

140144653 is a wasteful number, since it uses less digits than its factorization.

140144653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12740434.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140144653 is about 11838.2706929686. The cubic root of 140144653 is about 519.4281843057.

Adding to 140144653 its reverse (356441041), we get a palindrome (496585694).

The spelling of 140144653 in words is "one hundred forty million, one hundred forty-four thousand, six hundred fifty-three".