42405424403 has 4 divisors (see below), whose sum is σ = 42459307560. Its totient is φ = 42351541248.

The previous prime is 42405424361. The next prime is 42405424421. The reversal of 42405424403 is 30442450424.

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 42405424403 - 2¹⁸ = 42405162259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42405424403.

It is not an unprimeable number, because it can be changed into a prime (42405424483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26940398 + ... + 26941971.

It is an arithmetic number, because the mean of its divisors is an integer number (10614826890).

Almost surely, 2^42405424403 is an apocalyptic number.

42405424403 is a deficient number, since it is larger than the sum of its proper divisors (53883157).

42405424403 is an equidigital number, since it uses as much as digits as its factorization.

42405424403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53883156.

The product of its (nonzero) digits is 61440, while the sum is 32.

Adding to 42405424403 its reverse (30442450424), we get a palindrome (72847874827).

The spelling of 42405424403 in words is "forty-two billion, four hundred five million, four hundred twenty-four thousand, four hundred three".