1120000020 has 24 divisors (see below), whose sum is σ = 3136000224. Its totient is φ = 298666656.

The previous prime is 1119999983. The next prime is 1120000031. The reversal of 1120000020 is 200000211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1119999963 and 1120000008.

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, 9333274 + ... + 9333393.

It is an arithmetic number, because the mean of its divisors is an integer number (130666676).

Almost surely, 2^1120000020 is an apocalyptic number.

1120000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120000020 is an abundant number, since it is smaller than the sum of its proper divisors (2016000204).

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

1120000020 is a wasteful number, since it uses less digits than its factorization.

1120000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666679 (or 18666677 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1120000020 is about 33466.4013601702. The cubic root of 1120000020 is about 1038.4988265518.

Adding to 1120000020 its reverse (200000211), we get a palindrome (1320000231).

It can be divided in two parts, 1 and 120000020, that added together give a palindrome (120000021).

The spelling of 1120000020 in words is "one billion, one hundred twenty million, twenty", and thus it is an aban number.