1281064 has 16 divisors (see below), whose sum is σ = 2433600. Its totient is φ = 632112.

The previous prime is 1281047. The next prime is 1281083. The reversal of 1281064 is 4601821.

It is a super-2 number, since 2×1281064² = 3282249944192, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (152100).

2^1281064 is an apocalyptic number.

It is an amenable number.

1281064 is a deficient number, since it is larger than the sum of its proper divisors (1152536).

1281064 is a wasteful number, since it uses less digits than its factorization.

1281064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2108 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1281064 is about 1131.8409782297. The cubic root of 1281064 is about 108.6067811269.

Adding to 1281064 its reverse (4601821), we get a palindrome (5882885).

It can be divided in two parts, 12810 and 64, that multiplied together give a triangular number (819840 = T₁₂₈₀).

The spelling of 1281064 in words is "one million, two hundred eighty-one thousand, sixty-four".