4542240 has 48 divisors (see below), whose sum is σ = 14309568. Its totient is φ = 1211136.

The previous prime is 4542211. The next prime is 4542253. The reversal of 4542240 is 422454.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4252 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (298116).

Almost surely, 2^4542240 is an apocalyptic number.

4542240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4542240 is an abundant number, since it is smaller than the sum of its proper divisors (9767328).

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

4542240 is a wasteful number, since it uses less digits than its factorization.

4542240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9481 (or 9473 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 4542240 is about 2131.2531524903. The cubic root of 4542240 is about 165.6113227106.

Adding to 4542240 its reverse (422454), we get a palindrome (4964694).

The spelling of 4542240 in words is "four million, five hundred forty-two thousand, two hundred forty".