1281004 has 24 divisors (see below), whose sum is σ = 2349648. Its totient is φ = 610560.

The previous prime is 1280989. The next prime is 1281029. The reversal of 1281004 is 4001821.

It is a happy number.

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, 11919 + ... + 12025.

It is an arithmetic number, because the mean of its divisors is an integer number (97902).

2^1281004 is an apocalyptic number.

It is an amenable number.

1281004 is a deficient number, since it is larger than the sum of its proper divisors (1068644).

1281004 is a wasteful number, since it uses less digits than its factorization.

1281004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1281004 is about 1131.8144724291. The cubic root of 1281004 is about 108.6050855289.

Adding to 1281004 its reverse (4001821), we get a palindrome (5282825).

The spelling of 1281004 in words is "one million, two hundred eighty-one thousand, four".