140493871 has 4 divisors (see below), whose sum is σ = 160564432. Its totient is φ = 120423312.

The previous prime is 140493869. The next prime is 140493883. The reversal of 140493871 is 178394041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178394041 = 7 ⋅25484863.

It is a cyclic number.

It is not a de Polignac number, because 140493871 - 2¹ = 140493869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140493871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140493971) 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, 10035270 + ... + 10035283.

It is an arithmetic number, because the mean of its divisors is an integer number (40141108).

Almost surely, 2^140493871 is an apocalyptic number.

140493871 is a deficient number, since it is larger than the sum of its proper divisors (20070561).

140493871 is an equidigital number, since it uses as much as digits as its factorization.

140493871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20070560.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 140493871 is about 11853.0110520492. The cubic root of 140493871 is about 519.8592703492.

The spelling of 140493871 in words is "one hundred forty million, four hundred ninety-three thousand, eight hundred seventy-one".