1149121 has 4 divisors (see below), whose sum is σ = 1152000. Its totient is φ = 1146244.

The previous prime is 1149061. The next prime is 1149131. The reversal of 1149121 is 1219411.

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 1149121 - 2¹¹ = 1147073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (288000).

2^1149121 is an apocalyptic number.

It is an amenable number.

1149121 is a deficient number, since it is larger than the sum of its proper divisors (2879).

1149121 is an equidigital number, since it uses as much as digits as its factorization.

1149121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878.

The product of its digits is 72, while the sum is 19.

The square root of 1149121 is about 1071.9706152689. The cubic root of 1149121 is about 104.7422552055.

The spelling of 1149121 in words is "one million, one hundred forty-nine thousand, one hundred twenty-one".