42404005543 has 4 divisors (see below), whose sum is σ = 42537772440. Its totient is φ = 42270238648.

The previous prime is 42404005541. The next prime is 42404005583. The reversal of 42404005543 is 34550040424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42404005543 - 2¹ = 42404005541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404005541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66882973 + ... + 66883606.

It is an arithmetic number, because the mean of its divisors is an integer number (10634443110).

Almost surely, 2^42404005543 is an apocalyptic number.

42404005543 is a deficient number, since it is larger than the sum of its proper divisors (133766897).

42404005543 is a wasteful number, since it uses less digits than its factorization.

42404005543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133766896.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 42404005543 its reverse (34550040424), we get a palindrome (76954045967).

The spelling of 42404005543 in words is "forty-two billion, four hundred four million, five thousand, five hundred forty-three".