42542536 has 16 divisors (see below), whose sum is σ = 82518300. Its totient is φ = 20537664.

The previous prime is 42542531. The next prime is 42542569. The reversal of 42542536 is 63524524.

It can be written as a sum of positive squares in 2 ways, for example, as 41088100 + 1454436 = 6410^2 + 1206^2 .

It is a super-2 number, since 2×42542536² = 3619734738622592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42542498 and 42542507.

It is not an unprimeable number, because it can be changed into a prime (42542531) 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, 91455 + ... + 91918.

Almost surely, 2^42542536 is an apocalyptic number.

It is an amenable number.

42542536 is a deficient number, since it is larger than the sum of its proper divisors (39975764).

42542536 is a wasteful number, since it uses less digits than its factorization.

42542536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183408 (or 183404 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 42542536 is about 6522.4639516060. The cubic root of 42542536 is about 349.0929875948.

The spelling of 42542536 in words is "forty-two million, five hundred forty-two thousand, five hundred thirty-six".