1123421130 has 64 divisors (see below), whose sum is σ = 3226245120. Its totient is φ = 276533568.

The previous prime is 1123421129. The next prime is 1123421147. The reversal of 1123421130 is 311243211.

1123421130 is a `hidden beast` number, since 112 + 3 + 421 + 130 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156522 + ... + 163541.

It is an arithmetic number, because the mean of its divisors is an integer number (50410080).

Almost surely, 2^1123421130 is an apocalyptic number.

1123421130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123421130 is an abundant number, since it is smaller than the sum of its proper divisors (2102823990).

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

1123421130 is a wasteful number, since it uses less digits than its factorization.

1123421130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320092 (or 320086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1123421130 is about 33517.4749943966. The cubic root of 1123421130 is about 1039.5551382624. Note that the first 3 decimals are identical.

Adding to 1123421130 its reverse (311243211), we get a palindrome (1434664341).

The spelling of 1123421130 in words is "one billion, one hundred twenty-three million, four hundred twenty-one thousand, one hundred thirty".