129545143 has 16 divisors (see below), whose sum is σ = 161632576. Its totient is φ = 101088000.

The previous prime is 129545137. The next prime is 129545147. The reversal of 129545143 is 341545921.

It is not a de Polignac number, because 129545143 - 2⁹ = 129544631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129545099 and 129545108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129545147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3108 + ... + 16393.

It is an arithmetic number, because the mean of its divisors is an integer number (10102036).

Almost surely, 2^129545143 is an apocalyptic number.

129545143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

129545143 is a deficient number, since it is larger than the sum of its proper divisors (32087433).

129545143 is a wasteful number, since it uses less digits than its factorization.

129545143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19594.

The product of its digits is 21600, while the sum is 34.

The square root of 129545143 is about 11381.7899734620. The cubic root of 129545143 is about 505.9881875832.

The spelling of 129545143 in words is "one hundred twenty-nine million, five hundred forty-five thousand, one hundred forty-three".