42542351 has 8 divisors (see below), whose sum is σ = 43683024. Its totient is φ = 41408640.

The previous prime is 42542329. The next prime is 42542377. The reversal of 42542351 is 15324524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42542351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42542351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12071 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (5460378).

Almost surely, 2^42542351 is an apocalyptic number.

42542351 is a deficient number, since it is larger than the sum of its proper divisors (1140673).

42542351 is a wasteful number, since it uses less digits than its factorization.

42542351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481.

The product of its digits is 4800, while the sum is 26.

The square root of 42542351 is about 6522.4497698334. The cubic root of 42542351 is about 349.0924815735.

Adding to 42542351 its reverse (15324524), we get a palindrome (57866875).

The spelling of 42542351 in words is "forty-two million, five hundred forty-two thousand, three hundred fifty-one".