2424721 has 12 divisors (see below), whose sum is σ = 2720116. Its totient is φ = 2147040.

The previous prime is 2424713. The next prime is 2424739. The reversal of 2424721 is 1274242.

It is a happy number.

2424721 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 1134225 = 1136^2 + 1065^2 .

It is not a de Polignac number, because 2424721 - 2³ = 2424713 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2424692 and 2424701.

It is not an unprimeable number, because it can be changed into a prime (2424791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34116 + ... + 34186.

2^2424721 is an apocalyptic number.

It is an amenable number.

2424721 is a deficient number, since it is larger than the sum of its proper divisors (295395).

2424721 is an equidigital number, since it uses as much as digits as its factorization.

2424721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 121 counting only the distinct ones).

The product of its digits is 896, while the sum is 22.

The square root of 2424721 is about 1557.1515661618. The cubic root of 2424721 is about 134.3447165216.

Adding to 2424721 its reverse (1274242), we get a palindrome (3698963).

The spelling of 2424721 in words is "two million, four hundred twenty-four thousand, seven hundred twenty-one".