2542221 has 12 divisors (see below), whose sum is σ = 4006080. Its totient is φ = 1540680.

The previous prime is 2542201. The next prime is 2542223. The reversal of 2542221 is 1222452.

2542221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2542221 - 2¹¹ = 2540173 is a prime.

It is a super-2 number, since 2×2542221² = 12925775225682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2542194 and 2542203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12741 + ... + 12938.

It is an arithmetic number, because the mean of its divisors is an integer number (333840).

2^2542221 is an apocalyptic number.

It is an amenable number.

2542221 is a deficient number, since it is larger than the sum of its proper divisors (1463859).

2542221 is a wasteful number, since it uses less digits than its factorization.

2542221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25696 (or 25693 counting only the distinct ones).

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

The square root of 2542221 is about 1594.4343824692. The cubic root of 2542221 is about 136.4806557944.

Adding to 2542221 its reverse (1222452), we get a palindrome (3764673).

The spelling of 2542221 in words is "two million, five hundred forty-two thousand, two hundred twenty-one".