1121004 has 18 divisors (see below), whose sum is σ = 2833740. Its totient is φ = 373656.

The previous prime is 1120993. The next prime is 1121011. The reversal of 1121004 is 4001211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15534 + ... + 15605.

It is an arithmetic number, because the mean of its divisors is an integer number (157430).

2^1121004 is an apocalyptic number.

It is an amenable number.

1121004 is an abundant number, since it is smaller than the sum of its proper divisors (1712736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121004 is a wasteful number, since it uses less digits than its factorization.

1121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31149 (or 31144 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1121004 is about 1058.7747635829. The cubic root of 1121004 is about 103.8809041030.

Adding to 1121004 its reverse (4001211), we get a palindrome (5122215).

The spelling of 1121004 in words is "one million, one hundred twenty-one thousand, four".