1201189 has 4 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 1091980.

The previous prime is 1201183. The next prime is 1201201. The reversal of 1201189 is 9811021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201189 - 2⁷ = 1201061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201183) 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, 54589 + ... + 54610.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

2^1201189 is an apocalyptic number.

It is an amenable number.

1201189 is a deficient number, since it is larger than the sum of its proper divisors (109211).

1201189 is a wasteful number, since it uses less digits than its factorization.

1201189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109210.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1201189 is about 1095.9876824125. The cubic root of 1201189 is about 106.3009425839.

It can be divided in two parts, 12011 and 89, that added together give a square (12100 = 110²).

The spelling of 1201189 in words is "one million, two hundred one thousand, one hundred eighty-nine".