1005042347 has 2 divisors, whose sum is σ = 1005042348. Its totient is φ = 1005042346.

The previous prime is 1005042343. The next prime is 1005042361. The reversal of 1005042347 is 7432405001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005042347 - 2² = 1005042343 is a prime.

It is a super-2 number, since 2×1005042347² = 2020220238526536818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005042341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502521173 + 502521174.

It is an arithmetic number, because the mean of its divisors is an integer number (502521174).

Almost surely, 2^1005042347 is an apocalyptic number.

1005042347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005042347 is an equidigital number, since it uses as much as digits as its factorization.

1005042347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 1005042347 is about 31702.4028584585. The cubic root of 1005042347 is about 1001.6779651913.

Adding to 1005042347 its reverse (7432405001), we get a palindrome (8437447348).

The spelling of 1005042347 in words is "one billion, five million, forty-two thousand, three hundred forty-seven".