1017042257 has 16 divisors (see below), whose sum is σ = 1274589312. Its totient is φ = 788382720.

The previous prime is 1017042253. The next prime is 1017042277. The reversal of 1017042257 is 7522407101.

It is a cyclic number.

It is not a de Polignac number, because 1017042257 - 2² = 1017042253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1017042253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19358 + ... + 49079.

It is an arithmetic number, because the mean of its divisors is an integer number (79661832).

Almost surely, 2^1017042257 is an apocalyptic number.

It is an amenable number.

1017042257 is a deficient number, since it is larger than the sum of its proper divisors (257547055).

1017042257 is a wasteful number, since it uses less digits than its factorization.

1017042257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68648.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 1017042257 is about 31891.0999653508. The cubic root of 1017042257 is about 1005.6487834965.

Adding to 1017042257 its reverse (7522407101), we get a palindrome (8539449358).

The spelling of 1017042257 in words is "one billion, seventeen million, forty-two thousand, two hundred fifty-seven".