1404420 has 48 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 368896.

The previous prime is 1404419. The next prime is 1404427. The reversal of 1404420 is 244041.

1404420 = T₂₂₇ + T₂₂₈ + ... + T₂₇₁.

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 1404420.

It is not an unprimeable number, because it can be changed into a prime (1404427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5209 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^1404420 is an apocalyptic number.

1404420 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 1404420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995840).

1404420 is an abundant number, since it is smaller than the sum of its proper divisors (2587260).

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

1404420 is a wasteful number, since it uses less digits than its factorization.

1404420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1404420 is about 1185.0822756248. The cubic root of 1404420 is about 111.9864992230.

Adding to 1404420 its reverse (244041), we get a palindrome (1648461).

It can be divided in two parts, 140 and 4420, that added together give a triangular number (4560 = T₉₅).

The spelling of 1404420 in words is "one million, four hundred four thousand, four hundred twenty".