135120143 has 2 divisors, whose sum is σ = 135120144. Its totient is φ = 135120142.

The previous prime is 135120137. The next prime is 135120149. The reversal of 135120143 is 341021531.

It is a balanced prime because it is at equal distance from previous prime (135120137) and next prime (135120149).

It is an emirp because it is prime and its reverse (341021531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135120143 - 2⁶ = 135120079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135120149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67560071 + 67560072.

It is an arithmetic number, because the mean of its divisors is an integer number (67560072).

Almost surely, 2^135120143 is an apocalyptic number.

135120143 is a deficient number, since it is larger than the sum of its proper divisors (1).

135120143 is an equidigital number, since it uses as much as digits as its factorization.

135120143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 135120143 is about 11624.1190203817. The cubic root of 135120143 is about 513.1449178742.

Adding to 135120143 its reverse (341021531), we get a palindrome (476141674).

The spelling of 135120143 in words is "one hundred thirty-five million, one hundred twenty thousand, one hundred forty-three".