4243590 has 120 divisors (see below), whose sum is σ = 12754368. Its totient is φ = 1010880.

The previous prime is 4243573. The next prime is 4243597. The reversal of 4243590 is 953424.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243597) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 136875 + ... + 136905.

Almost surely, 2^4243590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4243590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6377184).

4243590 is an abundant number, since it is smaller than the sum of its proper divisors (8510778).

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

4243590 is a wasteful number, since it uses less digits than its factorization.

4243590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 54 counting only the distinct ones).

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

The square root of 4243590 is about 2059.9975728141. The cubic root of 4243590 is about 161.8991141409.

The spelling of 4243590 in words is "four million, two hundred forty-three thousand, five hundred ninety".