5421023 has 4 divisors (see below), whose sum is σ = 5706360. Its totient is φ = 5135688.

The previous prime is 5421019. The next prime is 5421043. The reversal of 5421023 is 3201245.

5421023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3201245 = 5 ⋅640249.

It is a cyclic number.

It is not a de Polignac number, because 5421023 - 2² = 5421019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5420992 and 5421010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142640 + ... + 142677.

It is an arithmetic number, because the mean of its divisors is an integer number (1426590).

Almost surely, 2^5421023 is an apocalyptic number.

5421023 is a deficient number, since it is larger than the sum of its proper divisors (285337).

5421023 is a wasteful number, since it uses less digits than its factorization.

5421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285336.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 5421023 is about 2328.3090430611. The cubic root of 5421023 is about 175.6684421605.

Adding to 5421023 its reverse (3201245), we get a palindrome (8622268).

It can be divided in two parts, 542102 and 3, that multiplied together give a triangular number (1626306 = T₁₈₀₃).

The spelling of 5421023 in words is "five million, four hundred twenty-one thousand, twenty-three".