143612129 has 2 divisors, whose sum is σ = 143612130. Its totient is φ = 143612128.

The previous prime is 143612123. The next prime is 143612137. The reversal of 143612129 is 921216341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83905600 + 59706529 = 9160^2 + 7727^2 .

It is a cyclic number.

It is not a de Polignac number, because 143612129 - 2¹² = 143608033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (143612123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71806064 + 71806065.

It is an arithmetic number, because the mean of its divisors is an integer number (71806065).

Almost surely, 2^143612129 is an apocalyptic number.

It is an amenable number.

143612129 is a deficient number, since it is larger than the sum of its proper divisors (1).

143612129 is an equidigital number, since it uses as much as digits as its factorization.

143612129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 143612129 is about 11983.8278108457. The cubic root of 143612129 is about 523.6772493852.

The spelling of 143612129 in words is "one hundred forty-three million, six hundred twelve thousand, one hundred twenty-nine".