1281364 has 12 divisors (see below), whose sum is σ = 2562784. Its totient is φ = 549144.

The previous prime is 1281349. The next prime is 1281367. The reversal of 1281364 is 4631821.

1281364 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281367) 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, 22854 + ... + 22909.

2^1281364 is an apocalyptic number.

1281364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1281364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1281364 is a wasteful number, since it uses less digits than its factorization.

1281364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45774 (or 45772 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1281364 is about 1131.9734979230. The cubic root of 1281364 is about 108.6152583228.

The spelling of 1281364 in words is "one million, two hundred eighty-one thousand, three hundred sixty-four".