4723421 has 4 divisors (see below), whose sum is σ = 4833312. Its totient is φ = 4613532.

The previous prime is 4723409. The next prime is 4723423. The reversal of 4723421 is 1243274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4723421 - 2¹⁰ = 4722397 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 (4723423) 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, 54881 + ... + 54966.

It is an arithmetic number, because the mean of its divisors is an integer number (1208328).

Almost surely, 2^4723421 is an apocalyptic number.

It is an amenable number.

4723421 is a deficient number, since it is larger than the sum of its proper divisors (109891).

4723421 is a wasteful number, since it uses less digits than its factorization.

4723421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109890.

The product of its digits is 1344, while the sum is 23.

The square root of 4723421 is about 2173.3432770734. The cubic root of 4723421 is about 167.7846470620.

Adding to 4723421 its reverse (1243274), we get a palindrome (5966695).

The spelling of 4723421 in words is "four million, seven hundred twenty-three thousand, four hundred twenty-one".