1275223147 has 4 divisors (see below), whose sum is σ = 1391152536. Its totient is φ = 1159293760.

The previous prime is 1275223097. The next prime is 1275223199. The reversal of 1275223147 is 7413225721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7413225721 = 11 ⋅673929611.

It is a cyclic number.

It is not a de Polignac number, because 1275223147 - 2¹¹ = 1275221099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275223447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57964678 + ... + 57964699.

It is an arithmetic number, because the mean of its divisors is an integer number (347788134).

Almost surely, 2^1275223147 is an apocalyptic number.

1275223147 is a deficient number, since it is larger than the sum of its proper divisors (115929389).

1275223147 is a wasteful number, since it uses less digits than its factorization.

1275223147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115929388.

The product of its digits is 23520, while the sum is 34.

The square root of 1275223147 is about 35710.2666890070. The cubic root of 1275223147 is about 1084.4146990059.

Adding to 1275223147 its reverse (7413225721), we get a palindrome (8688448868).

It can be divided in two parts, 1275 and 223147, that added together give a palindrome (224422).

The spelling of 1275223147 in words is "one billion, two hundred seventy-five million, two hundred twenty-three thousand, one hundred forty-seven".