1288001 has 8 divisors (see below), whose sum is σ = 1513344. Its totient is φ = 1080720.

The previous prime is 1287997. The next prime is 1288003. The reversal of 1288001 is 1008821.

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

It is a cyclic number.

It is not a de Polignac number, because 1288001 - 2² = 1287997 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1288003) 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, 4361 + ... + 4646.

It is an arithmetic number, because the mean of its divisors is an integer number (189168).

2^1288001 is an apocalyptic number.

1288001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1288001 is a deficient number, since it is larger than the sum of its proper divisors (225343).

1288001 is a wasteful number, since it uses less digits than its factorization.

1288001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1288001 is about 1134.9013172959. The cubic root of 1288001 is about 108.8024646663.

The spelling of 1288001 in words is "one million, two hundred eighty-eight thousand, one".