4240540 has 24 divisors (see below), whose sum is σ = 8971200. Its totient is φ = 1683648.

The previous prime is 4240519. The next prime is 4240541. The reversal of 4240540 is 450424.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269 + ... + 3691.

It is an arithmetic number, because the mean of its divisors is an integer number (373800).

Almost surely, 2^4240540 is an apocalyptic number.

It is an amenable number.

4240540 is an abundant number, since it is smaller than the sum of its proper divisors (4730660).

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

4240540 is a wasteful number, since it uses less digits than its factorization.

4240540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4240540 is about 2059.2571476142. The cubic root of 4240540 is about 161.8603175365.

Adding to 4240540 its reverse (450424), we get a palindrome (4690964).

The spelling of 4240540 in words is "four million, two hundred forty thousand, five hundred forty".