1005347129 has 4 divisors (see below), whose sum is σ = 1007277300. Its totient is φ = 1003416960.

The previous prime is 1005347099. The next prime is 1005347141. The reversal of 1005347129 is 9217435001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9217435001 = 11909 ⋅773989.

It can be written as a sum of positive squares in 2 ways, for example, as 100540729 + 904806400 = 10027^2 + 30080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005347129 - 2²⁰ = 1004298553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005347095 and 1005347104.

It is not an unprimeable number, because it can be changed into a prime (1005347179) 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 3 ways as a sum of consecutive naturals, for example, 964304 + ... + 965345.

It is an arithmetic number, because the mean of its divisors is an integer number (251819325).

Almost surely, 2^1005347129 is an apocalyptic number.

It is an amenable number.

1005347129 is a deficient number, since it is larger than the sum of its proper divisors (1930171).

1005347129 is an equidigital number, since it uses as much as digits as its factorization.

1005347129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930170.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1005347129 is about 31707.2094167872. The cubic root of 1005347129 is about 1001.7792088717.

The spelling of 1005347129 in words is "one billion, five million, three hundred forty-seven thousand, one hundred twenty-nine".