1281324 has 48 divisors (see below), whose sum is σ = 3459456. Its totient is φ = 364800.

The previous prime is 1281317. The next prime is 1281331. The reversal of 1281324 is 4231821.

1281324 = T₂₁₉ + T₂₂₀ + ... + T₂₆₂.

It is an interprime number because it is at equal distance from previous prime (1281317) and next prime (1281331).

It is a self number, because there is not a number n which added to its sum of digits gives 1281324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1959 + ... + 2529.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2^1281324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729728).

1281324 is an abundant number, since it is smaller than the sum of its proper divisors (2178132).

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

1281324 is a wasteful number, since it uses less digits than its factorization.

1281324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 604 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1281324 is about 1131.9558295269. The cubic root of 1281324 is about 108.6141281064.

The spelling of 1281324 in words is "one million, two hundred eighty-one thousand, three hundred twenty-four".