13129542 has 48 divisors (see below), whose sum is σ = 30478032. Its totient is φ = 4070400.

The previous prime is 13129537. The next prime is 13129549. The reversal of 13129542 is 24592131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32542 + ... + 32942.

It is an arithmetic number, because the mean of its divisors is an integer number (634959).

Almost surely, 2^13129542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13129542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15239016).

13129542 is an abundant number, since it is smaller than the sum of its proper divisors (17348490).

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

13129542 is a wasteful number, since it uses less digits than its factorization.

13129542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 530 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 13129542 is about 3623.4709878789. The cubic root of 13129542 is about 235.9119057394.

The spelling of 13129542 in words is "thirteen million, one hundred twenty-nine thousand, five hundred forty-two".