140302493 has 4 divisors (see below), whose sum is σ = 145140540. Its totient is φ = 135464448.

The previous prime is 140302471. The next prime is 140302523. The reversal of 140302493 is 394203041.

140302493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104816644 + 35485849 = 10238^2 + 5957^2 .

It is a cyclic number.

It is not a de Polignac number, because 140302493 - 2⁶ = 140302429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140302193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2418980 + ... + 2419037.

It is an arithmetic number, because the mean of its divisors is an integer number (36285135).

Almost surely, 2^140302493 is an apocalyptic number.

It is an amenable number.

140302493 is a deficient number, since it is larger than the sum of its proper divisors (4838047).

140302493 is an equidigital number, since it uses as much as digits as its factorization.

140302493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838046.

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

The square root of 140302493 is about 11844.9353311869. The cubic root of 140302493 is about 519.6231157155.

The spelling of 140302493 in words is "one hundred forty million, three hundred two thousand, four hundred ninety-three".