140258497 has 2 divisors, whose sum is σ = 140258498. Its totient is φ = 140258496.

The previous prime is 140258491. The next prime is 140258507. The reversal of 140258497 is 794852041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126427536 + 13830961 = 11244^2 + 3719^2 .

It is an emirp because it is prime and its reverse (794852041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140258497 is a prime.

It is not a weakly prime, because it can be changed into another prime (140258491) 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, 70129248 + 70129249.

It is an arithmetic number, because the mean of its divisors is an integer number (70129249).

Almost surely, 2^140258497 is an apocalyptic number.

It is an amenable number.

140258497 is a deficient number, since it is larger than the sum of its proper divisors (1).

140258497 is an equidigital number, since it uses as much as digits as its factorization.

140258497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 140258497 is about 11843.0780205148. The cubic root of 140258497 is about 519.5687956338.

It can be divided in two parts, 14025 and 8497, that added together give a palindrome (22522).

The spelling of 140258497 in words is "one hundred forty million, two hundred fifty-eight thousand, four hundred ninety-seven".