1266128 has 10 divisors (see below), whose sum is σ = 2453154. Its totient is φ = 633056.

The previous prime is 1266113. The next prime is 1266149. The reversal of 1266128 is 8216621.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 29584 = 1112^2 + 172^2 .

It is a super-2 number, since 2×1266128² = 3206160224768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1266097 and 1266106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39551 + ... + 39582.

2^1266128 is an apocalyptic number.

It is an amenable number.

1266128 is a deficient number, since it is larger than the sum of its proper divisors (1187026).

1266128 is an equidigital number, since it uses as much as digits as its factorization.

1266128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79141 (or 79135 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1266128 is about 1125.2235333479. The cubic root of 1266128 is about 108.1830457819.

The spelling of 1266128 in words is "one million, two hundred sixty-six thousand, one hundred twenty-eight".