1421423 has 6 divisors (see below), whose sum is σ = 1486464. Its totient is φ = 1359116.

The previous prime is 1421417. The next prime is 1421437. The reversal of 1421423 is 3241241.

It is not a de Polignac number, because 1421423 - 2¹⁰ = 1420399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 815 + ... + 1872.

It is an arithmetic number, because the mean of its divisors is an integer number (247744).

2^1421423 is an apocalyptic number.

1421423 is a deficient number, since it is larger than the sum of its proper divisors (65041).

1421423 is an equidigital number, since it uses as much as digits as its factorization.

1421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733 (or 2710 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 1421423 is about 1192.2344568079. The cubic root of 1421423 is about 112.4366194432.

Adding to 1421423 its reverse (3241241), we get a palindrome (4662664).

It can be divided in two parts, 142142 and 3, that multiplied together give a triangular number (426426 = T₉₂₃).

The spelling of 1421423 in words is "one million, four hundred twenty-one thousand, four hundred twenty-three".