129452544 has 120 divisors (see below), whose sum is σ = 402534132. Its totient is φ = 39813120.

The previous prime is 129452483. The next prime is 129452551. The reversal of 129452544 is 445254921.

It is a happy number.

129452544 is a `hidden beast` number, since 1 + 2 + 94 + 525 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 127238400 + 2214144 = 11280^2 + 1488^2 .

It is a super-2 number, since 2×129452544² = 33515922296143872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 129452499 and 129452508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58824 + ... + 60984.

Almost surely, 2^129452544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129452544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201267066).

129452544 is an abundant number, since it is smaller than the sum of its proper divisors (273081588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129452544 is a wasteful number, since it uses less digits than its factorization.

129452544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198 (or 2179 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 129452544 is about 11377.7213887492. The cubic root of 129452544 is about 505.8675985559.

The spelling of 129452544 in words is "one hundred twenty-nine million, four hundred fifty-two thousand, five hundred forty-four".