240140491 has 2 divisors, whose sum is σ = 240140492. Its totient is φ = 240140490.

The previous prime is 240140429. The next prime is 240140507. The reversal of 240140491 is 194041042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240140491 - 2¹¹ = 240138443 is a prime.

It is not a weakly prime, because it can be changed into another prime (240149491) 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, 120070245 + 120070246.

It is an arithmetic number, because the mean of its divisors is an integer number (120070246).

Almost surely, 2^240140491 is an apocalyptic number.

240140491 is a deficient number, since it is larger than the sum of its proper divisors (1).

240140491 is an equidigital number, since it uses as much as digits as its factorization.

240140491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 240140491 is about 15496.4670489760. The cubic root of 240140491 is about 621.5677381490.

The spelling of 240140491 in words is "two hundred forty million, one hundred forty thousand, four hundred ninety-one".