2124451 has 4 divisors (see below), whose sum is σ = 2427952. Its totient is φ = 1820952.

The previous prime is 2124449. The next prime is 2124457. The reversal of 2124451 is 1544212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2124451 - 2¹ = 2124449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151740 + ... + 151753.

It is an arithmetic number, because the mean of its divisors is an integer number (606988).

2^2124451 is an apocalyptic number.

2124451 is a deficient number, since it is larger than the sum of its proper divisors (303501).

2124451 is an equidigital number, since it uses as much as digits as its factorization.

2124451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303500.

The product of its digits is 320, while the sum is 19.

The square root of 2124451 is about 1457.5496561010. The cubic root of 2124451 is about 128.5530069433.

Adding to 2124451 its reverse (1544212), we get a palindrome (3668663).

The spelling of 2124451 in words is "two million, one hundred twenty-four thousand, four hundred fifty-one".