1275284943 has 12 divisors (see below), whose sum is σ = 1842387768. Its totient is φ = 850047120.

The previous prime is 1275284909. The next prime is 1275285017. The reversal of 1275284943 is 3494825721.

It is not a de Polignac number, because 1275284943 - 2⁸ = 1275284687 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275280943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100396 + ... + 112382.

It is an arithmetic number, because the mean of its divisors is an integer number (153532314).

Almost surely, 2^1275284943 is an apocalyptic number.

1275284943 is a deficient number, since it is larger than the sum of its proper divisors (567102825).

1275284943 is a wasteful number, since it uses less digits than its factorization.

1275284943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23814 (or 23811 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1275284943 is about 35711.1319198930. The cubic root of 1275284943 is about 1084.4322152627.

The spelling of 1275284943 in words is "one billion, two hundred seventy-five million, two hundred eighty-four thousand, nine hundred forty-three".