42554333231 has 4 divisors (see below), whose sum is σ = 44794035000. Its totient is φ = 40314631464.

The previous prime is 42554333203. The next prime is 42554333257. The reversal of 42554333231 is 13233345524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42554333231 is a prime.

It is a super-2 number, since 2×42554333231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42554333191 and 42554333200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42554333831) 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, 1119850856 + ... + 1119850893.

It is an arithmetic number, because the mean of its divisors is an integer number (11198508750).

Almost surely, 2^42554333231 is an apocalyptic number.

42554333231 is a deficient number, since it is larger than the sum of its proper divisors (2239701769).

42554333231 is a wasteful number, since it uses less digits than its factorization.

42554333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239701768.

The product of its digits is 129600, while the sum is 35.

Adding to 42554333231 its reverse (13233345524), we get a palindrome (55787678755).

The spelling of 42554333231 in words is "forty-two billion, five hundred fifty-four million, three hundred thirty-three thousand, two hundred thirty-one".