4205340 has 72 divisors (see below), whose sum is σ = 12999168. Its totient is φ = 1100160.

The previous prime is 4205323. The next prime is 4205347. The reversal of 4205340 is 435024.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10789 + ... + 11171.

It is an arithmetic number, because the mean of its divisors is an integer number (180544).

Almost surely, 2^4205340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4205340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6499584).

4205340 is an abundant number, since it is smaller than the sum of its proper divisors (8793828).

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

4205340 is a wasteful number, since it uses less digits than its factorization.

4205340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4205340 is about 2050.6925659396. The cubic root of 4205340 is about 161.4112142860.

The spelling of 4205340 in words is "four million, two hundred five thousand, three hundred forty".