1271149285 has 8 divisors (see below), whose sum is σ = 1743290496. Its totient is φ = 871645200.

The previous prime is 1271149261. The next prime is 1271149291. The reversal of 1271149285 is 5829411721.

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

It is not a de Polignac number, because 1271149285 - 2¹¹ = 1271147237 is a prime.

It is a super-2 number, since 2×1271149285² = 3231641009512022450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18159241 + ... + 18159310.

It is an arithmetic number, because the mean of its divisors is an integer number (217911312).

Almost surely, 2^1271149285 is an apocalyptic number.

It is an amenable number.

1271149285 is a deficient number, since it is larger than the sum of its proper divisors (472141211).

1271149285 is an equidigital number, since it uses as much as digits as its factorization.

1271149285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36318563.

The product of its digits is 40320, while the sum is 40.

The square root of 1271149285 is about 35653.1805734075. The cubic root of 1271149285 is about 1083.2587003943.

The spelling of 1271149285 in words is "one billion, two hundred seventy-one million, one hundred forty-nine thousand, two hundred eighty-five".