1113142120 has 32 divisors (see below), whose sum is σ = 2507283720. Its totient is φ = 444774400.

The previous prime is 1113142073. The next prime is 1113142123. The reversal of 1113142120 is 212413111.

It can be written as a sum of positive squares in 4 ways, for example, as 758121156 + 355020964 = 27534^2 + 18842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1113142094 and 1113142103.

It is not an unprimeable number, because it can be changed into a prime (1113142123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23520 + ... + 52720.

Almost surely, 2^1113142120 is an apocalyptic number.

1113142120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113142120 is an abundant number, since it is smaller than the sum of its proper divisors (1394141600).

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

1113142120 is a wasteful number, since it uses less digits than its factorization.

1113142120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30165 (or 30161 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1113142120 is about 33363.7845575109. The cubic root of 1113142120 is about 1036.3748662055.

Adding to 1113142120 its reverse (212413111), we get a palindrome (1325555231).

The spelling of 1113142120 in words is "one billion, one hundred thirteen million, one hundred forty-two thousand, one hundred twenty".