612420 has 48 divisors (see below), whose sum is σ = 1753920. Its totient is φ = 159616.

The previous prime is 612407. The next prime is 612439. The reversal of 612420 is 24216.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 612420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3454 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (36540).

2⁶¹²⁴²⁰ is an apocalyptic number.

612420 is a gapful number since it is divisible by the number (60) 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 612420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876960).

612420 is an abundant number, since it is smaller than the sum of its proper divisors (1141500).

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

612420 is a wasteful number, since it uses less digits than its factorization.

612420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 612420 is about 782.5726803307. The cubic root of 612420 is about 84.9212650378.

Adding to 612420 its reverse (24216), we get a palindrome (636636).

The spelling of 612420 in words is "six hundred twelve thousand, four hundred twenty".