1047205105 has 8 divisors (see below), whose sum is σ = 1256884200. Its totient is φ = 837605376.

The previous prime is 1047205099. The next prime is 1047205129. The reversal of 1047205105 is 5015027401.

It can be written as a sum of positive squares in 4 ways, for example, as 1846881 + 1045358224 = 1359^2 + 32332^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1047205105 - 2⁹ = 1047204593 is a prime.

It is a super-2 number, since 2×1047205105² = 2193277063876122050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1047205105.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14641 + ... + 48049.

It is an arithmetic number, because the mean of its divisors is an integer number (157110525).

Almost surely, 2^1047205105 is an apocalyptic number.

It is an amenable number.

1047205105 is a deficient number, since it is larger than the sum of its proper divisors (209679095).

1047205105 is an equidigital number, since it uses as much as digits as its factorization.

1047205105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39683.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 1047205105 is about 32360.5485892931. The cubic root of 1047205105 is about 1015.4937392557.

The spelling of 1047205105 in words is "one billion, forty-seven million, two hundred five thousand, one hundred five".