42243636403 has 4 divisors (see below), whose sum is σ = 42248167168. Its totient is φ = 42239105640.

The previous prime is 42243636397. The next prime is 42243636439. The reversal of 42243636403 is 30463634224.

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 42243636403 - 2¹³ = 42243628211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42243636443) 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, 2251368 + ... + 2270053.

It is an arithmetic number, because the mean of its divisors is an integer number (10562041792).

Almost surely, 2^42243636403 is an apocalyptic number.

42243636403 is a deficient number, since it is larger than the sum of its proper divisors (4530765).

42243636403 is an equidigital number, since it uses as much as digits as its factorization.

42243636403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530764.

The product of its (nonzero) digits is 248832, while the sum is 37.

The spelling of 42243636403 in words is "forty-two billion, two hundred forty-three million, six hundred thirty-six thousand, four hundred three".