1042319491 has 2 divisors, whose sum is σ = 1042319492. Its totient is φ = 1042319490.

The previous prime is 1042319483. The next prime is 1042319513. The reversal of 1042319491 is 1949132401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1042319491 - 2³ = 1042319483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042319471) 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, 521159745 + 521159746.

It is an arithmetic number, because the mean of its divisors is an integer number (521159746).

Almost surely, 2^1042319491 is an apocalyptic number.

1042319491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042319491 is an equidigital number, since it uses as much as digits as its factorization.

1042319491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1042319491 is about 32284.9731454124. The cubic root of 1042319491 is about 1013.9120542103.

The spelling of 1042319491 in words is "one billion, forty-two million, three hundred nineteen thousand, four hundred ninety-one".