4542121 has 8 divisors (see below), whose sum is σ = 4860800. Its totient is φ = 4231440.

The previous prime is 4542119. The next prime is 4542143. The reversal of 4542121 is 1212454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4542121 - 2¹ = 4542119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4542191) 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 7 ways as a sum of consecutive naturals, for example, 801 + ... + 3118.

It is an arithmetic number, because the mean of its divisors is an integer number (607600).

Almost surely, 2^4542121 is an apocalyptic number.

It is an amenable number.

4542121 is a deficient number, since it is larger than the sum of its proper divisors (318679).

4542121 is a wasteful number, since it uses less digits than its factorization.

4542121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999.

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

The square root of 4542121 is about 2131.2252344602. The cubic root of 4542121 is about 165.6098764404.

Adding to 4542121 its reverse (1212454), we get a palindrome (5754575).

The spelling of 4542121 in words is "four million, five hundred forty-two thousand, one hundred twenty-one".