2100942 has 12 divisors (see below), whose sum is σ = 4552080. Its totient is φ = 700308.

The previous prime is 2100941. The next prime is 2100953. The reversal of 2100942 is 2490012.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 116719 = 2100942 / (2 + 1 + 0 + 0 + 9 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58342 + ... + 58377.

It is an arithmetic number, because the mean of its divisors is an integer number (379340).

2^2100942 is an apocalyptic number.

2100942 is an abundant number, since it is smaller than the sum of its proper divisors (2451138).

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

2100942 is a wasteful number, since it uses less digits than its factorization.

2100942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116727 (or 116724 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2100942 is about 1449.4626590568. The cubic root of 2100942 is about 128.0770613439.

Adding to 2100942 its reverse (2490012), we get a palindrome (4590954).

The spelling of 2100942 in words is "two million, one hundred thousand, nine hundred forty-two".