42402543 has 8 divisors (see below), whose sum is σ = 56604288. Its totient is φ = 28234584.

The previous prime is 42402523. The next prime is 42402551. The reversal of 42402543 is 34520424.

42402543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42402543 - 2⁸ = 42402287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5355 + ... + 10652.

It is an arithmetic number, because the mean of its divisors is an integer number (7075536).

Almost surely, 2^42402543 is an apocalyptic number.

42402543 is a deficient number, since it is larger than the sum of its proper divisors (14201745).

42402543 is a wasteful number, since it uses less digits than its factorization.

42402543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16893.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 42402543 is about 6511.7235045723. The cubic root of 42402543 is about 348.7096514259.

Adding to 42402543 its reverse (34520424), we get a palindrome (76922967).

The spelling of 42402543 in words is "forty-two million, four hundred two thousand, five hundred forty-three".