6402543 has 8 divisors (see below), whose sum is σ = 9756288. Its totient is φ = 3658584.

The previous prime is 6402541. The next prime is 6402547. The reversal of 6402543 is 3452046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6402543 - 2¹ = 6402541 is a prime.

6402543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152421 + ... + 152462.

It is an arithmetic number, because the mean of its divisors is an integer number (1219536).

Almost surely, 2^6402543 is an apocalyptic number.

6402543 is a deficient number, since it is larger than the sum of its proper divisors (3353745).

6402543 is a wasteful number, since it uses less digits than its factorization.

6402543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304893.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 6402543 is about 2530.3246827235. The cubic root of 6402543 is about 185.6881408391.

Adding to 6402543 its reverse (3452046), we get a palindrome (9854589).

The spelling of 6402543 in words is "six million, four hundred two thousand, five hundred forty-three".