1201149 has 12 divisors (see below), whose sum is σ = 1799616. Its totient is φ = 800604.

The previous prime is 1201141. The next prime is 1201153. The reversal of 1201149 is 9411021.

It is not a de Polignac number, because 1201149 - 2³ = 1201141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2229 + ... + 2714.

It is an arithmetic number, because the mean of its divisors is an integer number (149968).

2^1201149 is an apocalyptic number.

It is an amenable number.

1201149 is a deficient number, since it is larger than the sum of its proper divisors (598467).

1201149 is an frugal number, since it uses more digits than its factorization.

1201149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4958 (or 4946 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1201149 is about 1095.9694338803. The cubic root of 1201149 is about 106.2997626183.

The spelling of 1201149 in words is "one million, two hundred one thousand, one hundred forty-nine".