143129605 has 4 divisors (see below), whose sum is σ = 171755532. Its totient is φ = 114503680.

The previous prime is 143129563. The next prime is 143129639. The reversal of 143129605 is 506921341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506921341 = 313 ⋅1619557.

It can be written as a sum of positive squares in 2 ways, for example, as 26532801 + 116596804 = 5151^2 + 10798^2 .

It is not a de Polignac number, because 143129605 - 2¹³ = 143121413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14312956 + ... + 14312965.

It is an arithmetic number, because the mean of its divisors is an integer number (42938883).

Almost surely, 2^143129605 is an apocalyptic number.

It is an amenable number.

143129605 is a deficient number, since it is larger than the sum of its proper divisors (28625927).

143129605 is an equidigital number, since it uses as much as digits as its factorization.

143129605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28625926.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 143129605 is about 11963.6785730811. The cubic root of 143129605 is about 523.0900882727.

The spelling of 143129605 in words is "one hundred forty-three million, one hundred twenty-nine thousand, six hundred five".