6240542491 has 2 divisors, whose sum is σ = 6240542492. Its totient is φ = 6240542490.

The previous prime is 6240542479. The next prime is 6240542543. The reversal of 6240542491 is 1942450426.

6240542491 is digitally balanced in base 3, 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 6240542491 - 2¹³ = 6240534299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6240542491.

It is not a weakly prime, because it can be changed into another prime (6240542591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3120271245 + 3120271246.

It is an arithmetic number, because the mean of its divisors is an integer number (3120271246).

Almost surely, 2^6240542491 is an apocalyptic number.

6240542491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6240542491 is an equidigital number, since it uses as much as digits as its factorization.

6240542491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 6240542491 is about 78997.1043203484. The cubic root of 6240542491 is about 1841.0861666523.

The spelling of 6240542491 in words is "six billion, two hundred forty million, five hundred forty-two thousand, four hundred ninety-one".