1139121 has 12 divisors (see below), whose sum is σ = 1717248. Its totient is φ = 726264.

The previous prime is 1139087. The next prime is 1139123. The reversal of 1139121 is 1219311.

It is not a de Polignac number, because 1139121 - 2¹⁰ = 1138097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1139094 and 1139103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2545 + ... + 2958.

It is an arithmetic number, because the mean of its divisors is an integer number (143104).

2^1139121 is an apocalyptic number.

It is an amenable number.

1139121 is a deficient number, since it is larger than the sum of its proper divisors (578127).

1139121 is a wasteful number, since it uses less digits than its factorization.

1139121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 5529 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

The square root of 1139121 is about 1067.2961163613. The cubic root of 1139121 is about 104.4375365969.

The spelling of 1139121 in words is "one million, one hundred thirty-nine thousand, one hundred twenty-one".