1344420 has 144 divisors (see below), whose sum is σ = 5136768. Its totient is φ = 276480.

The previous prime is 1344407. The next prime is 1344457. The reversal of 1344420 is 244431.

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

It is a junction number, because it is equal to n+sod(n) for n = 1344393 and 1344402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13812 + ... + 13908.

It is an arithmetic number, because the mean of its divisors is an integer number (35672).

2^1344420 is an apocalyptic number.

1344420 is a gapful number since it is divisible by the number (10) 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 1344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2568384).

1344420 is an abundant number, since it is smaller than the sum of its proper divisors (3792348).

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

1344420 is a wasteful number, since it uses less digits than its factorization.

1344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 125 counting only the distinct ones).

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

The square root of 1344420 is about 1159.4912677550. The cubic root of 1344420 is about 110.3684613754.

Adding to 1344420 its reverse (244431), we get a palindrome (1588851).

It can be divided in two parts, 1344 and 420, that added together give a square (1764 = 42²).

The spelling of 1344420 in words is "one million, three hundred forty-four thousand, four hundred twenty".