1273128 has 16 divisors (see below), whose sum is σ = 3182880. Its totient is φ = 424368.

The previous prime is 1273127. The next prime is 1273157. The reversal of 1273128 is 8213721.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 53047 = 1273128 / (1 + 2 + 7 + 3 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 1273098 and 1273107.

It is not an unprimeable number, because it can be changed into a prime (1273121) 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, 26500 + ... + 26547.

It is an arithmetic number, because the mean of its divisors is an integer number (198930).

2^1273128 is an apocalyptic number.

It is an amenable number.

1273128 is an abundant number, since it is smaller than the sum of its proper divisors (1909752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1273128 is a wasteful number, since it uses less digits than its factorization.

1273128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53056 (or 53052 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 1273128 is about 1128.3297390391. The cubic root of 1273128 is about 108.3820488332.

Adding to 1273128 its reverse (8213721), we get a palindrome (9486849).

The spelling of 1273128 in words is "one million, two hundred seventy-three thousand, one hundred twenty-eight".