1420424 has 8 divisors (see below), whose sum is σ = 2663310. Its totient is φ = 710208.

The previous prime is 1420403. The next prime is 1420429. The reversal of 1420424 is 4240241.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 232324 = 1090^2 + 482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1420429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88769 + ... + 88784.

2^1420424 is an apocalyptic number.

It is an amenable number.

1420424 is a deficient number, since it is larger than the sum of its proper divisors (1242886).

1420424 is a wasteful number, since it uses less digits than its factorization.

1420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177559 (or 177555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1420424 is about 1191.8154219509. The cubic root of 1420424 is about 112.4102724873.

Adding to 1420424 its reverse (4240241), we get a palindrome (5660665).

The spelling of 1420424 in words is "one million, four hundred twenty thousand, four hundred twenty-four".