13881042 has 48 divisors (see below), whose sum is σ = 35223552. Its totient is φ = 3867840.

The previous prime is 13881037. The next prime is 13881047. The reversal of 13881042 is 24018831.

It is an interprime number because it is at equal distance from previous prime (13881037) and next prime (13881047).

It is a junction number, because it is equal to n+sod(n) for n = 13880997 and 13881015.

It is not an unprimeable number, because it can be changed into a prime (13881047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3823 + ... + 6509.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^13881042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13881042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17611776).

13881042 is an abundant number, since it is smaller than the sum of its proper divisors (21342510).

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

13881042 is a wasteful number, since it uses less digits than its factorization.

13881042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 13881042 is about 3725.7270431420. The cubic root of 13881042 is about 240.3296511681.

Adding to 13881042 its reverse (24018831), we get a palindrome (37899873).

The spelling of 13881042 in words is "thirteen million, eight hundred eighty-one thousand, forty-two".