1424220 has 48 divisors (see below), whose sum is σ = 4558848. Its totient is φ = 325440.

The previous prime is 1424191. The next prime is 1424231. The reversal of 1424220 is 224241.

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 1424220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276 + ... + 2115.

It is an arithmetic number, because the mean of its divisors is an integer number (94976).

2^1424220 is an apocalyptic number.

1424220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1424220 is an abundant number, since it is smaller than the sum of its proper divisors (3134628).

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

1424220 is a wasteful number, since it uses less digits than its factorization.

1424220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410 (or 3408 counting only the distinct ones).

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

The square root of 1424220 is about 1193.4068878635. The cubic root of 1424220 is about 112.5103200409.

Adding to 1424220 its reverse (224241), we get a palindrome (1648461).

The spelling of 1424220 in words is "one million, four hundred twenty-four thousand, two hundred twenty".