4250421 has 32 divisors (see below), whose sum is σ = 7377920. Its totient is φ = 2367792.

The previous prime is 4250387. The next prime is 4250431. The reversal of 4250421 is 1240524.

It is not a de Polignac number, because 4250421 - 2⁷ = 4250293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4250394 and 4250403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4250431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7866 + ... + 8388.

It is an arithmetic number, because the mean of its divisors is an integer number (230560).

Almost surely, 2^4250421 is an apocalyptic number.

It is an amenable number.

4250421 is a deficient number, since it is larger than the sum of its proper divisors (3127499).

4250421 is a wasteful number, since it uses less digits than its factorization.

4250421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4250421 is about 2061.6549177784. The cubic root of 4250421 is about 161.9859384228.

Adding to 4250421 its reverse (1240524), we get a palindrome (5490945).

The spelling of 4250421 in words is "four million, two hundred fifty thousand, four hundred twenty-one".