42340521543 has 16 divisors (see below), whose sum is σ = 59014365696. Its totient is φ = 26951254880.

The previous prime is 42340521523. The next prime is 42340521617. The reversal of 42340521543 is 34512504324.

It is a cyclic number.

It is not a de Polignac number, because 42340521543 - 2⁶ = 42340521479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42340521523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512403 + ... + 589268.

It is an arithmetic number, because the mean of its divisors is an integer number (3688397856).

Almost surely, 2^42340521543 is an apocalyptic number.

42340521543 is a deficient number, since it is larger than the sum of its proper divisors (16673844153).

42340521543 is a wasteful number, since it uses less digits than its factorization.

42340521543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102254.

The product of its (nonzero) digits is 57600, while the sum is 33.

The spelling of 42340521543 in words is "forty-two billion, three hundred forty million, five hundred twenty-one thousand, five hundred forty-three".