1252443321 has 12 divisors (see below), whose sum is σ = 1813813248. Its totient is φ = 832779864.

The previous prime is 1252443319. The next prime is 1252443323. The reversal of 1252443321 is 1233442521.

It is an interprime number because it is at equal distance from previous prime (1252443319) and next prime (1252443323).

It is not a de Polignac number, because 1252443321 - 2¹ = 1252443319 is a prime.

It is a super-2 number, since 2×1252443321² = 3137228544635018082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252443323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178225 + ... + 185118.

It is an arithmetic number, because the mean of its divisors is an integer number (151151104).

Almost surely, 2^1252443321 is an apocalyptic number.

It is an amenable number.

1252443321 is a deficient number, since it is larger than the sum of its proper divisors (561369927).

1252443321 is a wasteful number, since it uses less digits than its factorization.

1252443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363732 (or 363729 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1252443321 is about 35389.8759675702. The cubic root of 1252443321 is about 1077.9187516140.

Adding to 1252443321 its reverse (1233442521), we get a palindrome (2485885842).

The spelling of 1252443321 in words is "one billion, two hundred fifty-two million, four hundred forty-three thousand, three hundred twenty-one".