1271128 has 16 divisors (see below), whose sum is σ = 2466000. Its totient is φ = 613536.

The previous prime is 1271117. The next prime is 1271129. The reversal of 1271128 is 8211721.

It is a junction number, because it is equal to n+sod(n) for n = 1271099 and 1271108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2508 + ... + 2971.

It is an arithmetic number, because the mean of its divisors is an integer number (154125).

2^1271128 is an apocalyptic number.

It is an amenable number.

1271128 is a deficient number, since it is larger than the sum of its proper divisors (1194872).

1271128 is a wasteful number, since it uses less digits than its factorization.

1271128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514 (or 5510 counting only the distinct ones).

The product of its digits is 224, while the sum is 22.

The square root of 1271128 is about 1127.4431249513. The cubic root of 1271128 is about 108.3252654084.

Adding to 1271128 its reverse (8211721), we get a palindrome (9482849).

The spelling of 1271128 in words is "one million, two hundred seventy-one thousand, one hundred twenty-eight".