1443420 has 108 divisors (see below), whose sum is σ = 4959864. Its totient is φ = 349920.

The previous prime is 1443401. The next prime is 1443427. The reversal of 1443420 is 243441.

It is a tau number, because it is divible by the number of its divisors (108).

It is a super-2 number, since 2×1443420² = 4166922592800, which contains 22 as substring.

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 = 1443393 and 1443402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 131215 + ... + 131225.

2^1443420 is an apocalyptic number.

1443420 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 1443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479932).

1443420 is an abundant number, since it is smaller than the sum of its proper divisors (3516444).

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

1443420 is an equidigital number, since it uses as much as digits as its factorization.

1443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44 (or 21 counting only the distinct ones).

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

The square root of 1443420 is about 1201.4241549095. The cubic root of 1443420 is about 113.0136512080.

Adding to 1443420 its reverse (243441), we get a palindrome (1686861).

It can be divided in two parts, 14 and 43420, that added together give a palindrome (43434).

The spelling of 1443420 in words is "one million, four hundred forty-three thousand, four hundred twenty".