1159212020 has 12 divisors (see below), whose sum is σ = 2434345284. Its totient is φ = 463684800.

The previous prime is 1159211987. The next prime is 1159212049. The reversal of 1159212020 is 202129511.

It can be written as a sum of positive squares in 2 ways, for example, as 534811876 + 624400144 = 23126^2 + 24988^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28980281 + ... + 28980320.

It is an arithmetic number, because the mean of its divisors is an integer number (202862107).

Almost surely, 2^1159212020 is an apocalyptic number.

1159212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1159212020 is an abundant number, since it is smaller than the sum of its proper divisors (1275133264).

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

1159212020 is a wasteful number, since it uses less digits than its factorization.

1159212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57960610 (or 57960608 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 1159212020 is about 34047.2028219647. The cubic root of 1159212020 is about 1050.4796055395.

The spelling of 1159212020 in words is "one billion, one hundred fifty-nine million, two hundred twelve thousand, twenty".