4242240 has 112 divisors (see below), whose sum is σ = 14996160. Its totient is φ = 1128960.

The previous prime is 4242233. The next prime is 4242241. The reversal of 4242240 is 422424.

4242240 is a `hidden beast` number, since 424 + 2 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8395 + ... + 8885.

Almost surely, 2^4242240 is an apocalyptic number.

4242240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7498080).

4242240 is an abundant number, since it is smaller than the sum of its proper divisors (10753920).

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

4242240 is a wasteful number, since it uses less digits than its factorization.

4242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4242240 is about 2059.6698764608. The cubic root of 4242240 is about 161.8819441673.

Adding to 4242240 its reverse (422424), we get a palindrome (4664664).

The spelling of 4242240 in words is "four million, two hundred forty-two thousand, two hundred forty".