1042009993 has 2 divisors, whose sum is σ = 1042009994. Its totient is φ = 1042009992.

The previous prime is 1042009979. The next prime is 1042010003. The reversal of 1042009993 is 3999002401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038901824 + 3108169 = 32232^2 + 1763^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042009993 - 2⁹ = 1042009481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042009093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521004996 + 521004997.

It is an arithmetic number, because the mean of its divisors is an integer number (521004997).

Almost surely, 2^1042009993 is an apocalyptic number.

It is an amenable number.

1042009993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042009993 is an equidigital number, since it uses as much as digits as its factorization.

1042009993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 1042009993 is about 32280.1795688934. The cubic root of 1042009993 is about 1013.8116899681.

The spelling of 1042009993 in words is "one billion, forty-two million, nine thousand, nine hundred ninety-three".