129545141 has 6 divisors (see below), whose sum is σ = 142392726. Its totient is φ = 117768200.

The previous prime is 129545137. The next prime is 129545147. The reversal of 129545141 is 141545921.

It can be written as a sum of positive squares in only one way, i.e., 101082916 + 28462225 = 10054^2 + 5335^2 .

It is not a de Polignac number, because 129545141 - 2² = 129545137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129545098 and 129545107.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 535190 + ... + 535431.

It is an arithmetic number, because the mean of its divisors is an integer number (23732121).

Almost surely, 2^129545141 is an apocalyptic number.

129545141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129545141 is a deficient number, since it is larger than the sum of its proper divisors (12847585).

129545141 is a wasteful number, since it uses less digits than its factorization.

129545141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070643 (or 1070632 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 129545141 is about 11381.7898856024. The cubic root of 129545141 is about 505.9881849793.

The spelling of 129545141 in words is "one hundred twenty-nine million, five hundred forty-five thousand, one hundred forty-one".