1065122920 has 16 divisors (see below), whose sum is σ = 2396526660. Its totient is φ = 426049152.

The previous prime is 1065122899. The next prime is 1065122921. The reversal of 1065122920 is 292215601.

It can be written as a sum of positive squares in 2 ways, for example, as 1016206884 + 48916036 = 31878^2 + 6994^2 .

It is a super-2 number, since 2×1065122920² = 2268973669418652800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065122921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13313997 + ... + 13314076.

Almost surely, 2^1065122920 is an apocalyptic number.

1065122920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1065122920 is an abundant number, since it is smaller than the sum of its proper divisors (1331403740).

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

1065122920 is a wasteful number, since it uses less digits than its factorization.

1065122920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26628084 (or 26628080 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1065122920 is about 32636.2209822155. The cubic root of 1065122920 is about 1021.2527603626.

The spelling of 1065122920 in words is "one billion, sixty-five million, one hundred twenty-two thousand, nine hundred twenty".