1042665220 has 12 divisors (see below), whose sum is σ = 2189597004. Its totient is φ = 417066080.

The previous prime is 1042665209. The next prime is 1042665229. The reversal of 1042665220 is 225662401.

1042665220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 158911236 + 883753984 = 12606^2 + 29728^2 .

It is not an unprimeable number, because it can be changed into a prime (1042665229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26066611 + ... + 26066650.

It is an arithmetic number, because the mean of its divisors is an integer number (182466417).

Almost surely, 2^1042665220 is an apocalyptic number.

1042665220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042665220 is an abundant number, since it is smaller than the sum of its proper divisors (1146931784).

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

1042665220 is a wasteful number, since it uses less digits than its factorization.

1042665220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52133270 (or 52133268 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1042665220 is about 32290.3270345780. The cubic root of 1042665220 is about 1014.0241439786.

The spelling of 1042665220 in words is "one billion, forty-two million, six hundred sixty-five thousand, two hundred twenty".