42542201 has 12 divisors (see below), whose sum is σ = 46423440. Its totient is φ = 38965680.

The previous prime is 42542167. The next prime is 42542209. The reversal of 42542201 is 10224524.

It is a happy number.

It is not a de Polignac number, because 42542201 - 2¹⁴ = 42525817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42542209) 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 11 ways as a sum of consecutive naturals, for example, 22586 + ... + 24396.

It is an arithmetic number, because the mean of its divisors is an integer number (3868620).

Almost surely, 2^42542201 is an apocalyptic number.

It is an amenable number.

42542201 is a deficient number, since it is larger than the sum of its proper divisors (3881239).

42542201 is a wasteful number, since it uses less digits than its factorization.

42542201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1963 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42542201 is about 6522.4382710762. The cubic root of 42542201 is about 349.0920712848.

Adding to 42542201 its reverse (10224524), we get a palindrome (52766725).

The spelling of 42542201 in words is "forty-two million, five hundred forty-two thousand, two hundred one".