6239421 has 24 divisors (see below), whose sum is σ = 9502584. Its totient is φ = 3939840.

The previous prime is 6239419. The next prime is 6239423. The reversal of 6239421 is 1249326.

6239421 is a `hidden beast` number, since 6 + 239 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (6239419) and next prime (6239423).

It can be written as a sum of positive squares in 4 ways, for example, as 1664100 + 4575321 = 1290^2 + 2139^2 .

It is not a de Polignac number, because 6239421 - 2¹ = 6239419 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6239423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13425 + ... + 13881.

It is an arithmetic number, because the mean of its divisors is an integer number (395941).

Almost surely, 2^6239421 is an apocalyptic number.

It is an amenable number.

6239421 is a deficient number, since it is larger than the sum of its proper divisors (3263163).

6239421 is a wasteful number, since it uses less digits than its factorization.

6239421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 538 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 6239421 is about 2497.8833039195. The cubic root of 6239421 is about 184.0975872541.

The spelling of 6239421 in words is "six million, two hundred thirty-nine thousand, four hundred twenty-one".