1009521043 has 2 divisors, whose sum is σ = 1009521044. Its totient is φ = 1009521042.

The previous prime is 1009521011. The next prime is 1009521077. The reversal of 1009521043 is 3401259001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1009521043 - 2⁵ = 1009521011 is a prime.

It is a super-3 number, since 3×1009521043³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1009520999 and 1009521017.

It is not a weakly prime, because it can be changed into another prime (1009521343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504760521 + 504760522.

It is an arithmetic number, because the mean of its divisors is an integer number (504760522).

Almost surely, 2^1009521043 is an apocalyptic number.

1009521043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009521043 is an equidigital number, since it uses as much as digits as its factorization.

1009521043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1009521043 is about 31772.9608787094. The cubic root of 1009521043 is about 1003.1636616899.

The spelling of 1009521043 in words is "one billion, nine million, five hundred twenty-one thousand, forty-three".