1201089 has 8 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 795056.

The previous prime is 1201087. The next prime is 1201097. The reversal of 1201089 is 9801021.

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 1201089 - 2¹ = 1201087 is a prime.

It is a super-2 number, since 2×1201089² = 2885229571842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201087) 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, 897 + ... + 1790.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

2^1201089 is an apocalyptic number.

It is an amenable number.

1201089 is a deficient number, since it is larger than the sum of its proper divisors (411711).

1201089 is a wasteful number, since it uses less digits than its factorization.

1201089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1201089 is about 1095.9420605123. The cubic root of 1201089 is about 106.2979926209.

The spelling of 1201089 in words is "one million, two hundred one thousand, eighty-nine".