1281072 has 40 divisors (see below), whose sum is σ = 3565744. Its totient is φ = 393984.

The previous prime is 1281047. The next prime is 1281083. The reversal of 1281072 is 2701821.

It is a super-2 number, since 2×1281072² = 3282290938368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403 + ... + 1650.

2^1281072 is an apocalyptic number.

1281072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1281072 is an abundant number, since it is smaller than the sum of its proper divisors (2284672).

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

1281072 is a wasteful number, since it uses less digits than its factorization.

1281072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077 (or 2071 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1281072 is about 1131.8445122896. The cubic root of 1281072 is about 108.6070072026.

Adding to 1281072 its reverse (2701821), we get a palindrome (3982893).

The spelling of 1281072 in words is "one million, two hundred eighty-one thousand, seventy-two".