42542580 has 24 divisors (see below), whose sum is σ = 119119392. Its totient is φ = 11344672.

The previous prime is 42542573. The next prime is 42542641. The reversal of 42542580 is 8524524.

It is a super-2 number, since 2×42542580² = 3619742226112800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354462 + ... + 354581.

It is an arithmetic number, because the mean of its divisors is an integer number (4963308).

Almost surely, 2^42542580 is an apocalyptic number.

It is an amenable number.

42542580 is an abundant number, since it is smaller than the sum of its proper divisors (76576812).

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

42542580 is a wasteful number, since it uses less digits than its factorization.

42542580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709055 (or 709053 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 42542580 is about 6522.4673245636. The cubic root of 42542580 is about 349.0931079456.

The spelling of 42542580 in words is "forty-two million, five hundred forty-two thousand, five hundred eighty".