2123242 has 16 divisors (see below), whose sum is σ = 3511872. Its totient is φ = 954720.

The previous prime is 2123239. The next prime is 2123243. The reversal of 2123242 is 2423212.

It is not an unprimeable number, because it can be changed into a prime (2123243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1798 + ... + 2734.

It is an arithmetic number, because the mean of its divisors is an integer number (219492).

2^2123242 is an apocalyptic number.

2123242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123242 is a deficient number, since it is larger than the sum of its proper divisors (1388630).

2123242 is a wasteful number, since it uses less digits than its factorization.

2123242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053.

The product of its digits is 192, while the sum is 16.

The square root of 2123242 is about 1457.1348599220. The cubic root of 2123242 is about 128.5286163160.

Adding to 2123242 its reverse (2423212), we get a palindrome (4546454).

The spelling of 2123242 in words is "two million, one hundred twenty-three thousand, two hundred forty-two".