140445271 has 4 divisors (see below), whose sum is σ = 140483200. Its totient is φ = 140407344.

The previous prime is 140445257. The next prime is 140445287. The reversal of 140445271 is 172544041.

140445271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172544041 = 73 ⋅2363617.

It is a cyclic number.

It is not a de Polignac number, because 140445271 - 2¹⁷ = 140314199 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 (140445971) 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, 12726 + ... + 21043.

It is an arithmetic number, because the mean of its divisors is an integer number (35120800).

Almost surely, 2^140445271 is an apocalyptic number.

140445271 is a deficient number, since it is larger than the sum of its proper divisors (37929).

140445271 is an equidigital number, since it uses as much as digits as its factorization.

140445271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37928.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 140445271 is about 11850.9607627399. The cubic root of 140445271 is about 519.7993197521.

The spelling of 140445271 in words is "one hundred forty million, four hundred forty-five thousand, two hundred seventy-one".