42555055523 has 4 divisors (see below), whose sum is σ = 42577095288. Its totient is φ = 42533015760.

The previous prime is 42555055519. The next prime is 42555055547. The reversal of 42555055523 is 32555055524.

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 42555055523 - 2² = 42555055519 is a prime.

It is a super-2 number, since 2×42555055523² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42555055583) 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, 11016986 + ... + 11020847.

It is an arithmetic number, because the mean of its divisors is an integer number (10644273822).

Almost surely, 2^42555055523 is an apocalyptic number.

42555055523 is a deficient number, since it is larger than the sum of its proper divisors (22039765).

42555055523 is a wasteful number, since it uses less digits than its factorization.

42555055523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22039764.

The product of its (nonzero) digits is 750000, while the sum is 41.

Subtracting from 42555055523 its reverse (32555055524), we obtain a palindrome (9999999999).

The spelling of 42555055523 in words is "forty-two billion, five hundred fifty-five million, fifty-five thousand, five hundred twenty-three".