1423021 has 8 divisors (see below), whose sum is σ = 1468800. Its totient is φ = 1378080.

The previous prime is 1423003. The next prime is 1423039. The reversal of 1423021 is 1203241.

It is an interprime number because it is at equal distance from previous prime (1423003) and next prime (1423039).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1423021 - 2¹⁵ = 1390253 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 1422992 and 1423010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423061) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5116 + ... + 5386.

It is an arithmetic number, because the mean of its divisors is an integer number (183600).

2^1423021 is an apocalyptic number.

It is an amenable number.

1423021 is a deficient number, since it is larger than the sum of its proper divisors (45779).

1423021 is an equidigital number, since it uses as much as digits as its factorization.

1423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1423021 is about 1192.9044387544. The cubic root of 1423021 is about 112.4787383688.

Adding to 1423021 its reverse (1203241), we get a palindrome (2626262).

The spelling of 1423021 in words is "one million, four hundred twenty-three thousand, twenty-one".