13125042 has 72 divisors (see below), whose sum is σ = 34572096. Its totient is φ = 3581424.

The previous prime is 13125001. The next prime is 13125053. The reversal of 13125042 is 24052131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19963 + ... + 20609.

It is an arithmetic number, because the mean of its divisors is an integer number (480168).

Almost surely, 2^13125042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13125042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17286048).

13125042 is an abundant number, since it is smaller than the sum of its proper divisors (21447054).

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

13125042 is a wasteful number, since it uses less digits than its factorization.

13125042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13125042 is about 3622.8499830934. The cubic root of 13125042 is about 235.8849506259.

Adding to 13125042 its reverse (24052131), we get a palindrome (37177173).

The spelling of 13125042 in words is "thirteen million, one hundred twenty-five thousand, forty-two".