140053643 has 4 divisors (see below), whose sum is σ = 140096880. Its totient is φ = 140010408.

The previous prime is 140053603. The next prime is 140053687. The reversal of 140053643 is 346350041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346350041 = 191 ⋅1813351.

It is a cyclic number.

It is not a de Polignac number, because 140053643 - 2²⁶ = 72944779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140053603) 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, 16328 + ... + 23381.

It is an arithmetic number, because the mean of its divisors is an integer number (35024220).

Almost surely, 2^140053643 is an apocalyptic number.

140053643 is a deficient number, since it is larger than the sum of its proper divisors (43237).

140053643 is an equidigital number, since it uses as much as digits as its factorization.

140053643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43236.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 140053643 is about 11834.4261795830. The cubic root of 140053643 is about 519.3157209930.

The spelling of 140053643 in words is "one hundred forty million, fifty-three thousand, six hundred forty-three".