4542390 has 48 divisors (see below), whose sum is σ = 12108096. Its totient is φ = 1180800.

The previous prime is 4542389. The next prime is 4542407. The reversal of 4542390 is 932454.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3075 + ... + 4305.

It is an arithmetic number, because the mean of its divisors is an integer number (252252).

Almost surely, 2^4542390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4542390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6054048).

4542390 is an abundant number, since it is smaller than the sum of its proper divisors (7565706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4542390 is a wasteful number, since it uses less digits than its factorization.

4542390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1282 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 4542390 is about 2131.2883427636. The cubic root of 4542390 is about 165.6131457043.

The spelling of 4542390 in words is "four million, five hundred forty-two thousand, three hundred ninety".