243143434129 has 2 divisors, whose sum is σ = 243143434130. Its totient is φ = 243143434128.

The previous prime is 243143434091. The next prime is 243143434141. The reversal of 243143434129 is 921434341342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156546835600 + 86596598529 = 395660^2 + 294273^2 .

It is a cyclic number.

It is not a de Polignac number, because 243143434129 - 2³⁵ = 208783695761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243143434091 and 243143434100.

It is not a weakly prime, because it can be changed into another prime (243143434829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121571717064 + 121571717065.

It is an arithmetic number, because the mean of its divisors is an integer number (121571717065).

Almost surely, 2^243143434129 is an apocalyptic number.

It is an amenable number.

243143434129 is a deficient number, since it is larger than the sum of its proper divisors (1).

243143434129 is an equidigital number, since it uses as much as digits as its factorization.

243143434129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 40.

The spelling of 243143434129 in words is "two hundred forty-three billion, one hundred forty-three million, four hundred thirty-four thousand, one hundred twenty-nine".