1280067 has 8 divisors (see below), whose sum is σ = 1746624. Its totient is φ = 833448.

The previous prime is 1280023. The next prime is 1280101. The reversal of 1280067 is 7600821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1280067 - 2¹⁰ = 1279043 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1280267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4833 + ... + 5090.

It is an arithmetic number, because the mean of its divisors is an integer number (218328).

2^1280067 is an apocalyptic number.

1280067 is a deficient number, since it is larger than the sum of its proper divisors (466557).

1280067 is an equidigital number, since it uses as much as digits as its factorization.

1280067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1280067 is about 1131.4004596075. The cubic root of 1280067 is about 108.5785990680.

Adding to 1280067 its reverse (7600821), we get a palindrome (8880888).

The spelling of 1280067 in words is "one million, two hundred eighty thousand, sixty-seven".