1042540489 has 2 divisors, whose sum is σ = 1042540490. Its totient is φ = 1042540488.

The previous prime is 1042540463. The next prime is 1042540529. The reversal of 1042540489 is 9840452401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966152889 + 76387600 = 31083^2 + 8740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042540489 - 2⁷ = 1042540361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042540409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521270244 + 521270245.

It is an arithmetic number, because the mean of its divisors is an integer number (521270245).

Almost surely, 2^1042540489 is an apocalyptic number.

It is an amenable number.

1042540489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042540489 is an equidigital number, since it uses as much as digits as its factorization.

1042540489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1042540489 is about 32288.3955779782. The cubic root of 1042540489 is about 1013.9837074489.

The spelling of 1042540489 in words is "one billion, forty-two million, five hundred forty thousand, four hundred eighty-nine".