140203493 has 2 divisors, whose sum is σ = 140203494. Its totient is φ = 140203492.

The previous prime is 140203387. The next prime is 140203513. The reversal of 140203493 is 394302041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103999204 + 36204289 = 10198^2 + 6017^2 .

It is a cyclic number.

It is not a de Polignac number, because 140203493 - 2⁸ = 140203237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140203093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70101746 + 70101747.

It is an arithmetic number, because the mean of its divisors is an integer number (70101747).

Almost surely, 2^140203493 is an apocalyptic number.

It is an amenable number.

140203493 is a deficient number, since it is larger than the sum of its proper divisors (1).

140203493 is an equidigital number, since it uses as much as digits as its factorization.

140203493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 140203493 is about 11840.7555924443. The cubic root of 140203493 is about 519.5008684393.

The spelling of 140203493 in words is "one hundred forty million, two hundred three thousand, four hundred ninety-three".