1026040217 has 4 divisors (see below), whose sum is σ = 1035453540. Its totient is φ = 1016626896.

The previous prime is 1026040187. The next prime is 1026040237. The reversal of 1026040217 is 7120406201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 925619776 + 100420441 = 30424^2 + 10021^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026040217 - 2⁸ = 1026039961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1026040192 and 1026040201.

It is not an unprimeable number, because it can be changed into a prime (1026040237) 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 in 3 ways as a sum of consecutive naturals, for example, 4706498 + ... + 4706715.

It is an arithmetic number, because the mean of its divisors is an integer number (258863385).

Almost surely, 2^1026040217 is an apocalyptic number.

It is an amenable number.

1026040217 is a deficient number, since it is larger than the sum of its proper divisors (9413323).

1026040217 is an equidigital number, since it uses as much as digits as its factorization.

1026040217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413322.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1026040217 is about 32031.8625278019. The cubic root of 1026040217 is about 1008.6058000902.

Adding to 1026040217 its reverse (7120406201), we get a palindrome (8146446418).

The spelling of 1026040217 in words is "one billion, twenty-six million, forty thousand, two hundred seventeen".