1002004457 has 2 divisors, whose sum is σ = 1002004458. Its totient is φ = 1002004456.

The previous prime is 1002004439. The next prime is 1002004481. The reversal of 1002004457 is 7544002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 989479936 + 12524521 = 31456^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002004457 - 2¹² = 1002000361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002004417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501002228 + 501002229.

It is an arithmetic number, because the mean of its divisors is an integer number (501002229).

Almost surely, 2^1002004457 is an apocalyptic number.

It is an amenable number.

1002004457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002004457 is an equidigital number, since it uses as much as digits as its factorization.

1002004457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1002004457 is about 31654.4539836024. The cubic root of 1002004457 is about 1000.6677064023.

Adding to 1002004457 its reverse (7544002001), we get a palindrome (8546006458).

The spelling of 1002004457 in words is "one billion, two million, four thousand, four hundred fifty-seven".