1121415204 has 192 divisors, whose sum is σ = 3361390592. Its totient is φ = 283046400.

The previous prime is 1121415193. The next prime is 1121415227. The reversal of 1121415204 is 4025141211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 5314659 + ... + 5314869.

Almost surely, 2^1121415204 is an apocalyptic number.

1121415204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121415204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680695296).

1121415204 is an abundant number, since it is smaller than the sum of its proper divisors (2239975388).

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

1121415204 is a wasteful number, since it uses less digits than its factorization.

1121415204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1121415204 is about 33487.5380402919. The cubic root of 1121415204 is about 1038.9360433162.

Adding to 1121415204 its reverse (4025141211), we get a palindrome (5146556415).

The spelling of 1121415204 in words is "one billion, one hundred twenty-one million, four hundred fifteen thousand, two hundred four".