42549136 has 20 divisors (see below), whose sum is σ = 94216192. Its totient is φ = 18235296.

The previous prime is 42549127. The next prime is 42549137. The reversal of 42549136 is 63194524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42549137) 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, 189840 + ... + 190063.

Almost surely, 2^42549136 is an apocalyptic number.

It is an amenable number.

42549136 is an abundant number, since it is smaller than the sum of its proper divisors (51667056).

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

42549136 is a wasteful number, since it uses less digits than its factorization.

42549136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379918 (or 379912 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 42549136 is about 6522.9698757544. The cubic root of 42549136 is about 349.1110392893. Note that the first 3 decimals are identical.

The spelling of 42549136 in words is "forty-two million, five hundred forty-nine thousand, one hundred thirty-six".