1121005404 has 18 divisors (see below), whose sum is σ = 2833652640. Its totient is φ = 373668456.

The previous prime is 1121005397. The next prime is 1121005481. The reversal of 1121005404 is 4045001211.

1121005404 is a `hidden beast` number, since 1 + 121 + 0 + 0 + 540 + 4 = 666.

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 (18).

It is a congruent number.

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, 15569484 + ... + 15569555.

Almost surely, 2^1121005404 is an apocalyptic number.

It is an amenable number.

1121005404 is an abundant number, since it is smaller than the sum of its proper divisors (1712647236).

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

1121005404 is a wasteful number, since it uses less digits than its factorization.

1121005404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31139049 (or 31139044 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1121005404 is about 33481.4187871422. The cubic root of 1121005404 is about 1038.8094747146.

Adding to 1121005404 its reverse (4045001211), we get a palindrome (5166006615).

The spelling of 1121005404 in words is "one billion, one hundred twenty-one million, five thousand, four hundred four".