425340 has 72 divisors (see below), whose sum is σ = 1375920. Its totient is φ = 105984.

The previous prime is 425333. The next prime is 425363. The reversal of 425340 is 43524.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

425340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2991 + ... + 3129.

It is an arithmetic number, because the mean of its divisors is an integer number (19110).

2⁴²⁵³⁴⁰ 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 425340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687960).

425340 is an abundant number, since it is smaller than the sum of its proper divisors (950580).

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

425340 is a wasteful number, since it uses less digits than its factorization.

425340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 166 counting only the distinct ones).

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

The square root of 425340 is about 652.1809564837. The cubic root of 425340 is about 75.2047737274.

Adding to 425340 its reverse (43524), we get a palindrome (468864).

The spelling of 425340 in words is "four hundred twenty-five thousand, three hundred forty".