3420144 has 200 divisors, whose sum is σ = 12603360. Its totient is φ = 870912.

The previous prime is 3420139. The next prime is 3420161. The reversal of 3420144 is 4410243.

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.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 117922 + ... + 117950.

Almost surely, 2^3420144 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 3420144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6301680).

3420144 is an abundant number, since it is smaller than the sum of its proper divisors (9183216).

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

3420144 is a wasteful number, since it uses less digits than its factorization.

3420144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3420144 is about 1849.3631336220. The cubic root of 3420144 is about 150.6658400073.

Adding to 3420144 its reverse (4410243), we get a palindrome (7830387).

Subtracting 3420144 from its reverse (4410243), we obtain a palindrome (990099).

The spelling of 3420144 in words is "three million, four hundred twenty thousand, one hundred forty-four".