1243143522 has 48 divisors (see below), whose sum is σ = 2832106680. Its totient is φ = 393523200.

The previous prime is 1243143521. The next prime is 1243143541. The reversal of 1243143522 is 2253413421.

1243143522 is a `hidden beast` number, since 124 + 3 + 14 + 3 + 522 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1039482081 + 203661441 = 32241^2 + 14271^2 .

It is not an unprimeable number, because it can be changed into a prime (1243143521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12322 + ... + 51362.

Almost surely, 2^1243143522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243143522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416053340).

1243143522 is an abundant number, since it is smaller than the sum of its proper divisors (1588963158).

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

1243143522 is a wasteful number, since it uses less digits than its factorization.

1243143522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39139 (or 39136 counting only the distinct ones).

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

The square root of 1243143522 is about 35258.2404836089. The cubic root of 1243143522 is about 1075.2441549632.

Adding to 1243143522 its reverse (2253413421), we get a palindrome (3496556943).

The spelling of 1243143522 in words is "one billion, two hundred forty-three million, one hundred forty-three thousand, five hundred twenty-two".