4542921 has 12 divisors (see below), whose sum is σ = 6580548. Its totient is φ = 3020064.

The previous prime is 4542913. The next prime is 4542947. The reversal of 4542921 is 1292454.

It can be written as a sum of positive squares in 2 ways, for example, as 622521 + 3920400 = 789^2 + 1980^2 .

It is not a de Polignac number, because 4542921 - 2³ = 4542913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4542911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5491 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (548379).

Almost surely, 2^4542921 is an apocalyptic number.

It is an amenable number.

4542921 is a deficient number, since it is larger than the sum of its proper divisors (2037627).

4542921 is a wasteful number, since it uses less digits than its factorization.

4542921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1429 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 4542921 is about 2131.4129116621. The cubic root of 4542921 is about 165.6195987796.

It can be divided in two parts, 454 and 2921, that added together give a cube (3375 = 15³).

The spelling of 4542921 in words is "four million, five hundred forty-two thousand, nine hundred twenty-one".