1002457 has 2 divisors, whose sum is σ = 1002458. Its totient is φ = 1002456.

The previous prime is 1002451. The next prime is 1002467. The reversal of 1002457 is 7542001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978121 + 24336 = 989^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002457 - 2¹¹ = 1000409 is a prime.

1002457 is a modest number, since divided by 2457 gives 1 as remainder.

It is not a weakly prime, because it can be changed into another prime (1002451) 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, 501228 + 501229.

It is an arithmetic number, because the mean of its divisors is an integer number (501229).

2^1002457 is an apocalyptic number.

It is an amenable number.

1002457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002457 is an equidigital number, since it uses as much as digits as its factorization.

1002457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1002457 is about 1001.2277463195. The cubic root of 1002457 is about 100.0818330153.

Adding to 1002457 its reverse (7542001), we get a palindrome (8544458).

The spelling of 1002457 in words is "one million, two thousand, four hundred fifty-seven".