1052421320 has 16 divisors (see below), whose sum is σ = 2367948060. Its totient is φ = 420968512.

The previous prime is 1052421301. The next prime is 1052421323. The reversal of 1052421320 is 231242501.

It can be written as a sum of positive squares in 2 ways, for example, as 1013658244 + 38763076 = 31838^2 + 6226^2 .

It is a super-2 number, since 2×1052421320² = 2215181269581084800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1052421292 and 1052421301.

It is not an unprimeable number, because it can be changed into a prime (1052421323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13155227 + ... + 13155306.

Almost surely, 2^1052421320 is an apocalyptic number.

1052421320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052421320 is an abundant number, since it is smaller than the sum of its proper divisors (1315526740).

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

1052421320 is a wasteful number, since it uses less digits than its factorization.

1052421320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26310544 (or 26310540 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1052421320 is about 32441.0437563282. The cubic root of 1052421320 is about 1017.1770334898.

Adding to 1052421320 its reverse (231242501), we get a palindrome (1283663821).

The spelling of 1052421320 in words is "one billion, fifty-two million, four hundred twenty-one thousand, three hundred twenty".