140547493 has 2 divisors, whose sum is σ = 140547494. Its totient is φ = 140547492.

The previous prime is 140547461. The next prime is 140547527. The reversal of 140547493 is 394745041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84327489 + 56220004 = 9183^2 + 7498^2 .

It is a cyclic number.

It is not a de Polignac number, because 140547493 - 2⁵ = 140547461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140547403) 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, 70273746 + 70273747.

It is an arithmetic number, because the mean of its divisors is an integer number (70273747).

Almost surely, 2^140547493 is an apocalyptic number.

It is an amenable number.

140547493 is a deficient number, since it is larger than the sum of its proper divisors (1).

140547493 is an equidigital number, since it uses as much as digits as its factorization.

140547493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 140547493 is about 11855.2727931499. The cubic root of 140547493 is about 519.9253998012.

The spelling of 140547493 in words is "one hundred forty million, five hundred forty-seven thousand, four hundred ninety-three".