140285291 has 2 divisors, whose sum is σ = 140285292. Its totient is φ = 140285290.

The previous prime is 140285287. The next prime is 140285297. The reversal of 140285291 is 192582041.

140285291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140285291 - 2² = 140285287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140285297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70142645 + 70142646.

It is an arithmetic number, because the mean of its divisors is an integer number (70142646).

Almost surely, 2^140285291 is an apocalyptic number.

140285291 is a deficient number, since it is larger than the sum of its proper divisors (1).

140285291 is an equidigital number, since it uses as much as digits as its factorization.

140285291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 140285291 is about 11844.2091757956. The cubic root of 140285291 is about 519.6018784540.

The spelling of 140285291 in words is "one hundred forty million, two hundred eighty-five thousand, two hundred ninety-one".