140108453 has 2 divisors, whose sum is σ = 140108454. Its totient is φ = 140108452.

The previous prime is 140108417. The next prime is 140108459. The reversal of 140108453 is 354801041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136843204 + 3265249 = 11698^2 + 1807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140108453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140108459) 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 as a sum of consecutive naturals, namely, 70054226 + 70054227.

It is an arithmetic number, because the mean of its divisors is an integer number (70054227).

Almost surely, 2^140108453 is an apocalyptic number.

It is an amenable number.

140108453 is a deficient number, since it is larger than the sum of its proper divisors (1).

140108453 is an equidigital number, since it uses as much as digits as its factorization.

140108453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 140108453 is about 11836.7416546953. The cubic root of 140108453 is about 519.3834569018.

Adding to 140108453 its reverse (354801041), we get a palindrome (494909494).

The spelling of 140108453 in words is "one hundred forty million, one hundred eight thousand, four hundred fifty-three".