13601142 has 64 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 4226112.

The previous prime is 13601123. The next prime is 13601143. The reversal of 13601142 is 24110631.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58258 + ... + 58490.

It is an arithmetic number, because the mean of its divisors is an integer number (505440).

Almost surely, 2^13601142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13601142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16174080).

13601142 is an abundant number, since it is smaller than the sum of its proper divisors (18747018).

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

13601142 is a wasteful number, since it uses less digits than its factorization.

13601142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13601142 is about 3687.9726137812. The cubic root of 13601142 is about 238.7033193642.

Adding to 13601142 its reverse (24110631), we get a palindrome (37711773).

The spelling of 13601142 in words is "thirteen million, six hundred one thousand, one hundred forty-two".