42542132 has 24 divisors (see below), whose sum is σ = 76661760. Its totient is φ = 20648160.

The previous prime is 42542131. The next prime is 42542141. The reversal of 42542132 is 23124524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42542098 and 42542107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18173 + ... + 20379.

It is an arithmetic number, because the mean of its divisors is an integer number (3194240).

Almost surely, 2^42542132 is an apocalyptic number.

It is an amenable number.

42542132 is a deficient number, since it is larger than the sum of its proper divisors (34119628).

42542132 is a wasteful number, since it uses less digits than its factorization.

42542132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2349 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 42542132 is about 6522.4329816411. The cubic root of 42542132 is about 349.0918825517.

Adding to 42542132 its reverse (23124524), we get a palindrome (65666656).

The spelling of 42542132 in words is "forty-two million, five hundred forty-two thousand, one hundred thirty-two".