140138371 has 4 divisors (see below), whose sum is σ = 140353632. Its totient is φ = 139923112.

The previous prime is 140138363. The next prime is 140138381. The reversal of 140138371 is 173831041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173831041 = 1999 ⋅86959.

It is a cyclic number.

It is not a de Polignac number, because 140138371 - 2³ = 140138363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140138381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106651 + ... + 107956.

It is an arithmetic number, because the mean of its divisors is an integer number (35088408).

Almost surely, 2^140138371 is an apocalyptic number.

140138371 is a deficient number, since it is larger than the sum of its proper divisors (215261).

140138371 is an equidigital number, since it uses as much as digits as its factorization.

140138371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215260.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 140138371 is about 11838.0053640806. The cubic root of 140138371 is about 519.4204230473.

The spelling of 140138371 in words is "one hundred forty million, one hundred thirty-eight thousand, three hundred seventy-one".