2101442 has 16 divisors (see below), whose sum is σ = 3621120. Its totient is φ = 895968.

The previous prime is 2101439. The next prime is 2101447. The reversal of 2101442 is 2441012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a d-powerful number, because it can be written as 2⁷ + 1 + 0 + 1 + 4³ + 4⁶ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2101447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4934 + ... + 5342.

It is an arithmetic number, because the mean of its divisors is an integer number (226320).

2^2101442 is an apocalyptic number.

2101442 is a deficient number, since it is larger than the sum of its proper divisors (1519678).

2101442 is a wasteful number, since it uses less digits than its factorization.

2101442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2101442 is about 1449.6351265060. The cubic root of 2101442 is about 128.0872208266.

Adding to 2101442 its reverse (2441012), we get a palindrome (4542454).

The spelling of 2101442 in words is "two million, one hundred one thousand, four hundred forty-two".