143844121 has 2 divisors, whose sum is σ = 143844122. Its totient is φ = 143844120.

The previous prime is 143844119. The next prime is 143844131. The reversal of 143844121 is 121448341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105267600 + 38576521 = 10260^2 + 6211^2 .

It is a cyclic number.

It is not a de Polignac number, because 143844121 - 2¹ = 143844119 is a prime.

It is a super-2 number, since 2×143844121² = 41382262292525282, which contains 22 as substring.

Together with 143844119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 143844121.

It is not a weakly prime, because it can be changed into another prime (143844131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71922060 + 71922061.

It is an arithmetic number, because the mean of its divisors is an integer number (71922061).

Almost surely, 2^143844121 is an apocalyptic number.

It is an amenable number.

143844121 is a deficient number, since it is larger than the sum of its proper divisors (1).

143844121 is an equidigital number, since it uses as much as digits as its factorization.

143844121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 28.

The square root of 143844121 is about 11993.5032830279. The cubic root of 143844121 is about 523.9590815998.

The spelling of 143844121 in words is "one hundred forty-three million, eight hundred forty-four thousand, one hundred twenty-one".