4280421 has 4 divisors (see below), whose sum is σ = 5707232. Its totient is φ = 2853612.

The previous prime is 4280417. The next prime is 4280459. The reversal of 4280421 is 1240824.

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 not a de Polignac number, because 4280421 - 2² = 4280417 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4280021) 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, 713401 + ... + 713406.

It is an arithmetic number, because the mean of its divisors is an integer number (1426808).

Almost surely, 2^4280421 is an apocalyptic number.

It is an amenable number.

4280421 is a deficient number, since it is larger than the sum of its proper divisors (1426811).

4280421 is a wasteful number, since it uses less digits than its factorization.

4280421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426810.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 4280421 is about 2068.9178330712. The cubic root of 4280421 is about 162.3661509246.

The spelling of 4280421 in words is "four million, two hundred eighty thousand, four hundred twenty-one".