140394273 has 4 divisors (see below), whose sum is σ = 187192368. Its totient is φ = 93596180.

The previous prime is 140394271. The next prime is 140394283. The reversal of 140394273 is 372493041.

140394273 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 372493041 = 3 ⋅124164347.

It is a cyclic number.

It is not a de Polignac number, because 140394273 - 2¹ = 140394271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140394271) 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, 23399043 + ... + 23399048.

It is an arithmetic number, because the mean of its divisors is an integer number (46798092).

Almost surely, 2^140394273 is an apocalyptic number.

It is an amenable number.

140394273 is a deficient number, since it is larger than the sum of its proper divisors (46798095).

140394273 is an equidigital number, since it uses as much as digits as its factorization.

140394273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46798094.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 140394273 is about 11848.8089274830. The cubic root of 140394273 is about 519.7363962262.

The spelling of 140394273 in words is "one hundred forty million, three hundred ninety-four thousand, two hundred seventy-three".