4512420 has 144 divisors (see below), whose sum is σ = 15567552. Its totient is φ = 1048320.

The previous prime is 4512407. The next prime is 4512427. The reversal of 4512420 is 242154.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4512393 and 4512402.

It is not an unprimeable number, because it can be changed into a prime (4512427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85114 + ... + 85166.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

Almost surely, 2^4512420 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 4512420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783776).

4512420 is an abundant number, since it is smaller than the sum of its proper divisors (11055132).

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

4512420 is a wasteful number, since it uses less digits than its factorization.

4512420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4512420 is about 2124.2457484952. The cubic root of 4512420 is about 165.2481115745.

Adding to 4512420 its reverse (242154), we get a palindrome (4754574).

The spelling of 4512420 in words is "four million, five hundred twelve thousand, four hundred twenty".