121445143 has 2 divisors, whose sum is σ = 121445144. Its totient is φ = 121445142.

The previous prime is 121445141. The next prime is 121445167. The reversal of 121445143 is 341544121.

It is a weak prime.

It is an emirp because it is prime and its reverse (341544121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121445143 - 2¹ = 121445141 is a prime.

Together with 121445141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121445141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60722571 + 60722572.

It is an arithmetic number, because the mean of its divisors is an integer number (60722572).

Almost surely, 2^121445143 is an apocalyptic number.

121445143 is a deficient number, since it is larger than the sum of its proper divisors (1).

121445143 is an equidigital number, since it uses as much as digits as its factorization.

121445143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 121445143 is about 11020.2151975358. The cubic root of 121445143 is about 495.2145354451.

Adding to 121445143 its reverse (341544121), we get a palindrome (462989264).

The spelling of 121445143 in words is "one hundred twenty-one million, four hundred forty-five thousand, one hundred forty-three".