1042009481 has 2 divisors, whose sum is σ = 1042009482. Its totient is φ = 1042009480.

The previous prime is 1042009439. The next prime is 1042009487. The reversal of 1042009481 is 1849002401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1040707600 + 1301881 = 32260^2 + 1141^2 .

It is an emirp because it is prime and its reverse (1849002401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042009481 - 2¹⁴ = 1041993097 is a prime.

It is a super-2 number, since 2×1042009481² = 2171567516987778722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1042009487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521004740 + 521004741.

It is an arithmetic number, because the mean of its divisors is an integer number (521004741).

Almost surely, 2^1042009481 is an apocalyptic number.

It is an amenable number.

1042009481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042009481 is an equidigital number, since it uses as much as digits as its factorization.

1042009481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1042009481 is about 32280.1716383293. The cubic root of 1042009481 is about 1013.8115239199.

The spelling of 1042009481 in words is "one billion, forty-two million, nine thousand, four hundred eighty-one".