1121454420 has 24 divisors (see below), whose sum is σ = 3140072544. Its totient is φ = 299054496.

The previous prime is 1121454413. The next prime is 1121454479. The reversal of 1121454420 is 244541211.

It is a super-2 number, since 2×1121454420² = 2515320032275072800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9345394 + ... + 9345513.

It is an arithmetic number, because the mean of its divisors is an integer number (130836356).

Almost surely, 2^1121454420 is an apocalyptic number.

1121454420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121454420 is an abundant number, since it is smaller than the sum of its proper divisors (2018618124).

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

1121454420 is a wasteful number, since it uses less digits than its factorization.

1121454420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18690919 (or 18690917 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1121454420 is about 33488.1235664228. The cubic root of 1121454420 is about 1038.9481537403.

Adding to 1121454420 its reverse (244541211), we get a palindrome (1365995631).

The spelling of 1121454420 in words is "one billion, one hundred twenty-one million, four hundred fifty-four thousand, four hundred twenty".