13122642 has 32 divisors (see below), whose sum is σ = 29034432. Its totient is φ = 3927744.

The previous prime is 13122631. The next prime is 13122647. The reversal of 13122642 is 24622131.

It is not an unprimeable number, because it can be changed into a prime (13122647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (907326).

Almost surely, 2^13122642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13122642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14517216).

13122642 is an abundant number, since it is smaller than the sum of its proper divisors (15911790).

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

13122642 is a wasteful number, since it uses less digits than its factorization.

13122642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602.

The product of its digits is 576, while the sum is 21.

The square root of 13122642 is about 3622.5187370116. The cubic root of 13122642 is about 235.8705720461.

Adding to 13122642 its reverse (24622131), we get a palindrome (37744773).

The spelling of 13122642 in words is "thirteen million, one hundred twenty-two thousand, six hundred forty-two".