6423240 has 32 divisors (see below), whose sum is σ = 19270080. Its totient is φ = 1712832.

The previous prime is 6423227. The next prime is 6423247. The reversal of 6423240 is 423246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6423247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26644 + ... + 26883.

It is an arithmetic number, because the mean of its divisors is an integer number (602190).

Almost surely, 2^6423240 is an apocalyptic number.

6423240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6423240 is an abundant number, since it is smaller than the sum of its proper divisors (12846840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6423240 is a wasteful number, since it uses less digits than its factorization.

6423240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53541 (or 53537 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 6423240 is about 2534.4111742178. The cubic root of 6423240 is about 185.8880121341. Note that the first 3 decimals are identical.

Adding to 6423240 its reverse (423246), we get a palindrome (6846486).

The spelling of 6423240 in words is "six million, four hundred twenty-three thousand, two hundred forty".