1120128020 has 24 divisors (see below), whose sum is σ = 2566111968. Its totient is φ = 407319200.

The previous prime is 1120128019. The next prime is 1120128049. The reversal of 1120128020 is 208210211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120128020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545526 + ... + 2545965.

It is an arithmetic number, because the mean of its divisors is an integer number (106921332).

Almost surely, 2^1120128020 is an apocalyptic number.

1120128020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120128020 is an abundant number, since it is smaller than the sum of its proper divisors (1445983948).

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

1120128020 is a wasteful number, since it uses less digits than its factorization.

1120128020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091511 (or 5091509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1120128020 is about 33468.3136712921. The cubic root of 1120128020 is about 1038.5383869041.

Adding to 1120128020 its reverse (208210211), we get a palindrome (1328338231).

The spelling of 1120128020 in words is "one billion, one hundred twenty million, one hundred twenty-eight thousand, twenty".