2454021 has 24 divisors (see below), whose sum is σ = 3793920. Its totient is φ = 1524096.

The previous prime is 2454013. The next prime is 2454043. The reversal of 2454021 is 1204542.

It is not a de Polignac number, because 2454021 - 2³ = 2454013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2453985 and 2454003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2454121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19260 + ... + 19386.

It is an arithmetic number, because the mean of its divisors is an integer number (158080).

2^2454021 is an apocalyptic number.

It is an amenable number.

2454021 is a deficient number, since it is larger than the sum of its proper divisors (1339899).

2454021 is a wasteful number, since it uses less digits than its factorization.

2454021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2454021 is about 1566.5315189935. The cubic root of 2454021 is about 134.8836858223.

Adding to 2454021 its reverse (1204542), we get a palindrome (3658563).

It can be divided in two parts, 24 and 54021, that added together give a palindrome (54045).

The spelling of 2454021 in words is "two million, four hundred fifty-four thousand, twenty-one".