143421052237 has 2 divisors, whose sum is σ = 143421052238. Its totient is φ = 143421052236.

The previous prime is 143421052231. The next prime is 143421052249. The reversal of 143421052237 is 732250124341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84501257481 + 58919794756 = 290691^2 + 242734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143421052237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143421052231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71710526118 + 71710526119.

It is an arithmetic number, because the mean of its divisors is an integer number (71710526119).

Almost surely, 2^143421052237 is an apocalyptic number.

It is an amenable number.

143421052237 is a deficient number, since it is larger than the sum of its proper divisors (1).

143421052237 is an equidigital number, since it uses as much as digits as its factorization.

143421052237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 143421052237 its reverse (732250124341), we get a palindrome (875671176578).

The spelling of 143421052237 in words is "one hundred forty-three billion, four hundred twenty-one million, fifty-two thousand, two hundred thirty-seven".