1275427947 has 16 divisors (see below), whose sum is σ = 1831753728. Its totient is φ = 787079040.

The previous prime is 1275427927. The next prime is 1275427961. The reversal of 1275427947 is 7497245721.

It is not a de Polignac number, because 1275427947 - 2¹⁰ = 1275426923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1275427896 and 1275427905.

It is not an unprimeable number, because it can be changed into a prime (1275427927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295998 + ... + 300275.

It is an arithmetic number, because the mean of its divisors is an integer number (114484608).

Almost surely, 2^1275427947 is an apocalyptic number.

1275427947 is a deficient number, since it is larger than the sum of its proper divisors (556325781).

1275427947 is a wasteful number, since it uses less digits than its factorization.

1275427947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596330.

The product of its digits is 987840, while the sum is 48.

The square root of 1275427947 is about 35713.1340965757. The cubic root of 1275427947 is about 1084.4727479946.

The spelling of 1275427947 in words is "one billion, two hundred seventy-five million, four hundred twenty-seven thousand, nine hundred forty-seven".