42542343231 has 16 divisors (see below), whose sum is σ = 59195475456. Its totient is φ = 27125642016.

The previous prime is 42542343227. The next prime is 42542343241. The reversal of 42542343231 is 13234324524.

It is not a de Polignac number, because 42542343231 - 2² = 42542343227 is a prime.

It is a super-2 number, since 2×42542343231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42542343192 and 42542343201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542343241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792561 + ... + 844533.

It is an arithmetic number, because the mean of its divisors is an integer number (3699717216).

Almost surely, 2^42542343231 is an apocalyptic number.

42542343231 is a deficient number, since it is larger than the sum of its proper divisors (16653132225).

42542343231 is a wasteful number, since it uses less digits than its factorization.

42542343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63862.

The product of its digits is 69120, while the sum is 33.

Adding to 42542343231 its reverse (13234324524), we get a palindrome (55776667755).

The spelling of 42542343231 in words is "forty-two billion, five hundred forty-two million, three hundred forty-three thousand, two hundred thirty-one".