42547242 has 16 divisors (see below), whose sum is σ = 85275072. Its totient is φ = 14152320.

The previous prime is 42547237. The next prime is 42547249. The reversal of 42547242 is 24274524.

It is not an unprimeable number, because it can be changed into a prime (42547249) 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, 4359 + ... + 10202.

It is an arithmetic number, because the mean of its divisors is an integer number (5329692).

Almost surely, 2^42547242 is an apocalyptic number.

42547242 is an abundant number, since it is smaller than the sum of its proper divisors (42727830).

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

42547242 is a wasteful number, since it uses less digits than its factorization.

42547242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15053.

The product of its digits is 17920, while the sum is 30.

The square root of 42547242 is about 6522.8246948695. The cubic root of 42547242 is about 349.1058591910.

The spelling of 42547242 in words is "forty-two million, five hundred forty-seven thousand, two hundred forty-two".