2121243 has 8 divisors (see below), whose sum is σ = 2994768. Its totient is φ = 1330944.

The previous prime is 2121241. The next prime is 2121253. The reversal of 2121243 is 3421212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121243 - 2¹ = 2121241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121241) 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, 20746 + ... + 20847.

It is an arithmetic number, because the mean of its divisors is an integer number (374346).

2^2121243 is an apocalyptic number.

2121243 is a deficient number, since it is larger than the sum of its proper divisors (873525).

2121243 is a wasteful number, since it uses less digits than its factorization.

2121243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41613.

The product of its digits is 96, while the sum is 15.

The square root of 2121243 is about 1456.4487632595. The cubic root of 2121243 is about 128.4882677394.

Adding to 2121243 its reverse (3421212), we get a palindrome (5542455).

The spelling of 2121243 in words is "two million, one hundred twenty-one thousand, two hundred forty-three".