1252322143 has 2 divisors, whose sum is σ = 1252322144. Its totient is φ = 1252322142.

The previous prime is 1252322087. The next prime is 1252322171. The reversal of 1252322143 is 3412232521.

It is a strong prime.

It is an emirp because it is prime and its reverse (3412232521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252322143 is a prime.

It is a super-2 number, since 2×1252322143² = 3136621499696224898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252302143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626161071 + 626161072.

It is an arithmetic number, because the mean of its divisors is an integer number (626161072).

Almost surely, 2^1252322143 is an apocalyptic number.

1252322143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252322143 is an equidigital number, since it uses as much as digits as its factorization.

1252322143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 1252322143 is about 35388.1638828578. The cubic root of 1252322143 is about 1077.8839864343.

Adding to 1252322143 its reverse (3412232521), we get a palindrome (4664554664).

The spelling of 1252322143 in words is "one billion, two hundred fifty-two million, three hundred twenty-two thousand, one hundred forty-three".