129547545 has 16 divisors (see below), whose sum is σ = 212879040. Its totient is φ = 67224384.

The previous prime is 129547541. The next prime is 129547547. The reversal of 129547545 is 545745921.

It is not a de Polignac number, because 129547545 - 2² = 129547541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129547497 and 129547506.

It is not an unprimeable number, because it can be changed into a prime (129547541) 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, 116155 + ... + 117264.

It is an arithmetic number, because the mean of its divisors is an integer number (13304940).

Almost surely, 2^129547545 is an apocalyptic number.

129547545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129547545 is a deficient number, since it is larger than the sum of its proper divisors (83331495).

129547545 is a wasteful number, since it uses less digits than its factorization.

129547545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233464.

The product of its digits is 252000, while the sum is 42.

The square root of 129547545 is about 11381.8954924037. The cubic root of 129547545 is about 505.9913148743.

The spelling of 129547545 in words is "one hundred twenty-nine million, five hundred forty-seven thousand, five hundred forty-five".