129454452 has 72 divisors (see below), whose sum is σ = 335043072. Its totient is φ = 42134400.

The previous prime is 129454441. The next prime is 129454469. The reversal of 129454452 is 254454921.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460552 + ... + 460832.

It is an arithmetic number, because the mean of its divisors is an integer number (4653376).

Almost surely, 2^129454452 is an apocalyptic number.

129454452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129454452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167521536).

129454452 is an abundant number, since it is smaller than the sum of its proper divisors (205588620).

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

129454452 is a wasteful number, since it uses less digits than its factorization.

129454452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 544 counting only the distinct ones).

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

The square root of 129454452 is about 11377.8052365120. The cubic root of 129454452 is about 505.8700838698.

It can be divided in two parts, 129 and 454452, that added together give a triangular number (454581 = T₉₅₃).

The spelling of 129454452 in words is "one hundred twenty-nine million, four hundred fifty-four thousand, four hundred fifty-two".