1270117905 has 32 divisors (see below), whose sum is σ = 2360587008. Its totient is φ = 571104000.

The previous prime is 1270117897. The next prime is 1270117931. The reversal of 1270117905 is 5097110721.

It is not a de Polignac number, because 1270117905 - 2³ = 1270117897 is a prime.

It is a super-2 number, since 2×1270117905² = 3226398985203178050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92746 + ... + 105555.

It is an arithmetic number, because the mean of its divisors is an integer number (73768344).

Almost surely, 2^1270117905 is an apocalyptic number.

1270117905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1270117905 is a deficient number, since it is larger than the sum of its proper divisors (1090469103).

1270117905 is a wasteful number, since it uses less digits than its factorization.

1270117905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198377.

The product of its (nonzero) digits is 4410, while the sum is 33.

The square root of 1270117905 is about 35638.7135710592. The cubic root of 1270117905 is about 1082.9656444231.

The spelling of 1270117905 in words is "one billion, two hundred seventy million, one hundred seventeen thousand, nine hundred five".