42542224251 has 4 divisors (see below), whose sum is σ = 56722965672. Its totient is φ = 28361482832.

The previous prime is 42542224201. The next prime is 42542224259. The reversal of 42542224251 is 15242224524.

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 42542224251 - 2¹⁴ = 42542207867 is a prime.

It is a super-2 number, since 2×42542224251² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42542224259) 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, 7090370706 + ... + 7090370711.

It is an arithmetic number, because the mean of its divisors is an integer number (14180741418).

Almost surely, 2^42542224251 is an apocalyptic number.

42542224251 is a deficient number, since it is larger than the sum of its proper divisors (14180741421).

42542224251 is a wasteful number, since it uses less digits than its factorization.

42542224251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14180741420.

The product of its digits is 51200, while the sum is 33.

Adding to 42542224251 its reverse (15242224524), we get a palindrome (57784448775).

The spelling of 42542224251 in words is "forty-two billion, five hundred forty-two million, two hundred twenty-four thousand, two hundred fifty-one".