42555231243 has 72 divisors (see below), whose sum is σ = 74282345280. Its totient is φ = 23379632640.

The previous prime is 42555231167. The next prime is 42555231337. The reversal of 42555231243 is 34213255524.

42555231243 is a `hidden beast` number, since 4 + 2 + 5 + 5 + 523 + 124 + 3 = 666.

42555231243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42555231243 - 2²⁸ = 42286795787 is a prime.

It is a super-2 number, since 2×42555231243² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42555231198 and 42555231207.

It is not an unprimeable number, because it can be changed into a prime (42555231343) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3075246 + ... + 3089052.

It is an arithmetic number, because the mean of its divisors is an integer number (1031699240).

Almost surely, 2^42555231243 is an apocalyptic number.

42555231243 is a deficient number, since it is larger than the sum of its proper divisors (31727114037).

42555231243 is a wasteful number, since it uses less digits than its factorization.

42555231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097 (or 14087 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 42555231243 its reverse (34213255524), we get a palindrome (76768486767).

The spelling of 42555231243 in words is "forty-two billion, five hundred fifty-five million, two hundred thirty-one thousand, two hundred forty-three".