140293191 has 4 divisors (see below), whose sum is σ = 187057592. Its totient is φ = 93528792.

The previous prime is 140293183. The next prime is 140293199. The reversal of 140293191 is 191392041.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (140293183) and next prime (140293199).

It is not a de Polignac number, because 140293191 - 2³ = 140293183 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 (140293199) 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, 23382196 + ... + 23382201.

It is an arithmetic number, because the mean of its divisors is an integer number (46764398).

Almost surely, 2^140293191 is an apocalyptic number.

140293191 is a deficient number, since it is larger than the sum of its proper divisors (46764401).

140293191 is an equidigital number, since it uses as much as digits as its factorization.

140293191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46764400.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 140293191 is about 11844.5426674059. The cubic root of 140293191 is about 519.6116318591.

It can be divided in two parts, 1402931 and 91, that multiplied together give a palindrome (127666721).

The spelling of 140293191 in words is "one hundred forty million, two hundred ninety-three thousand, one hundred ninety-one".