2101742 has 24 divisors (see below), whose sum is σ = 3456432. Its totient is φ = 957600.

The previous prime is 2101741. The next prime is 2101751. The reversal of 2101742 is 2471012.

It is a self number, because there is not a number n which added to its sum of digits gives 2101742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29567 + ... + 29637.

It is an arithmetic number, because the mean of its divisors is an integer number (144018).

2^2101742 is an apocalyptic number.

2101742 is a deficient number, since it is larger than the sum of its proper divisors (1354690).

2101742 is a wasteful number, since it uses less digits than its factorization.

2101742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 2101742 is about 1449.7385971271. The cubic root of 2101742 is about 128.0933157426.

Adding to 2101742 its reverse (2471012), we get a palindrome (4572754).

The spelling of 2101742 in words is "two million, one hundred one thousand, seven hundred forty-two".