2354021 has 4 divisors (see below), whose sum is σ = 2366412. Its totient is φ = 2341632.

The previous prime is 2353993. The next prime is 2354039. The reversal of 2354021 is 1204532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1113025 + 1240996 = 1055^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2354021 - 2⁶ = 2353957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2354621) 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 3 ways as a sum of consecutive naturals, for example, 5906 + ... + 6291.

It is an arithmetic number, because the mean of its divisors is an integer number (591603).

2^2354021 is an apocalyptic number.

It is an amenable number.

2354021 is a deficient number, since it is larger than the sum of its proper divisors (12391).

2354021 is a wasteful number, since it uses less digits than its factorization.

2354021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12390.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2354021 is about 1534.2819167285. The cubic root of 2354021 is about 133.0260751257.

Adding to 2354021 its reverse (1204532), we get a palindrome (3558553).

The spelling of 2354021 in words is "two million, three hundred fifty-four thousand, twenty-one".