140535491 has 2 divisors, whose sum is σ = 140535492. Its totient is φ = 140535490.

The previous prime is 140535487. The next prime is 140535511. The reversal of 140535491 is 194535041.

It is a weak prime.

It is an emirp because it is prime and its reverse (194535041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140535491 - 2² = 140535487 is a prime.

It is a super-2 number, since 2×140535491² = 39500448461222162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140535401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70267745 + 70267746.

It is an arithmetic number, because the mean of its divisors is an integer number (70267746).

Almost surely, 2^140535491 is an apocalyptic number.

140535491 is a deficient number, since it is larger than the sum of its proper divisors (1).

140535491 is an equidigital number, since it uses as much as digits as its factorization.

140535491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 140535491 is about 11854.7665940751. The cubic root of 140535491 is about 519.9105997689.

The spelling of 140535491 in words is "one hundred forty million, five hundred thirty-five thousand, four hundred ninety-one".