1043420009 has 2 divisors, whose sum is σ = 1043420010. Its totient is φ = 1043420008.

The previous prime is 1043420003. The next prime is 1043420039. The reversal of 1043420009 is 9000243401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034587225 + 8832784 = 32165^2 + 2972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043420009 - 2⁸ = 1043419753 is a prime.

It is a super-3 number, since 3×1043420009³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1043420003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521710004 + 521710005.

It is an arithmetic number, because the mean of its divisors is an integer number (521710005).

Almost surely, 2^1043420009 is an apocalyptic number.

It is an amenable number.

1043420009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043420009 is an equidigital number, since it uses as much as digits as its factorization.

1043420009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1043420009 is about 32302.0124605264. The cubic root of 1043420009 is about 1014.2687701678.

The spelling of 1043420009 in words is "one billion, forty-three million, four hundred twenty thousand, nine".