2101242 has 64 divisors (see below), whose sum is σ = 5160960. Its totient is φ = 561600.

The previous prime is 2101237. The next prime is 2101243. The reversal of 2101242 is 2421012.

2101242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2101243) 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 31 ways as a sum of consecutive naturals, for example, 26559 + ... + 26637.

It is an arithmetic number, because the mean of its divisors is an integer number (80640).

2^2101242 is an apocalyptic number.

2101242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2580480).

2101242 is an abundant number, since it is smaller than the sum of its proper divisors (3059718).

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

2101242 is a wasteful number, since it uses less digits than its factorization.

2101242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2101242 is about 1449.5661419887. The cubic root of 2101242 is about 128.0831572269.

Adding to 2101242 its reverse (2421012), we get a palindrome (4522254).

The spelling of 2101242 in words is "two million, one hundred one thousand, two hundred forty-two".