140788191 has 16 divisors (see below), whose sum is σ = 190632960. Its totient is φ = 92408160.

The previous prime is 140788177. The next prime is 140788199. The reversal of 140788191 is 191887041.

It is not a de Polignac number, because 140788191 - 2¹⁷ = 140657119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140788199) 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 15 ways as a sum of consecutive naturals, for example, 118621 + ... + 119801.

It is an arithmetic number, because the mean of its divisors is an integer number (11914560).

Almost surely, 2^140788191 is an apocalyptic number.

140788191 is a deficient number, since it is larger than the sum of its proper divisors (49844769).

140788191 is a wasteful number, since it uses less digits than its factorization.

140788191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766.

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 140788191 is about 11865.4199672831. The cubic root of 140788191 is about 520.2220341252. Note that the first 3 decimals are identical.

It can be divided in two parts, 1407 and 88191, that added together give a palindrome (89598).

The spelling of 140788191 in words is "one hundred forty million, seven hundred eighty-eight thousand, one hundred ninety-one".