42542416 has 40 divisors (see below), whose sum is σ = 97247744. Its totient is φ = 17642880.

The previous prime is 42542377. The next prime is 42542417. The reversal of 42542416 is 61424524.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542417) 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, 2655 + ... + 9598.

Almost surely, 2^42542416 is an apocalyptic number.

It is an amenable number.

42542416 is an abundant number, since it is smaller than the sum of its proper divisors (54705328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42542416 is a wasteful number, since it uses less digits than its factorization.

42542416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299 (or 12293 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 42542416 is about 6522.4547526219. The cubic root of 42542416 is about 349.0926593649.

It can be divided in two parts, 4254 and 2416, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 42542416 in words is "forty-two million, five hundred forty-two thousand, four hundred sixteen".