4242390 has 16 divisors (see below), whose sum is σ = 10181808. Its totient is φ = 1131296.

The previous prime is 4242353. The next prime is 4242391. The reversal of 4242390 is 932424.

It is a happy number.

4242390 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4242390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242391) 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, 70677 + ... + 70736.

It is an arithmetic number, because the mean of its divisors is an integer number (636363).

Almost surely, 2^4242390 is an apocalyptic number.

4242390 is an abundant number, since it is smaller than the sum of its proper divisors (5939418).

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

4242390 is a wasteful number, since it uses less digits than its factorization.

4242390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141423.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4242390 is about 2059.7062897413. The cubic root of 4242390 is about 161.8838521220.

The spelling of 4242390 in words is "four million, two hundred forty-two thousand, three hundred ninety".