42511164 has 24 divisors (see below), whose sum is σ = 100450560. Its totient is φ = 13990704.

The previous prime is 42511163. The next prime is 42511177. The reversal of 42511164 is 46111524.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42511163) 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, 21474 + ... + 23369.

It is an arithmetic number, because the mean of its divisors is an integer number (4185440).

Almost surely, 2^42511164 is an apocalyptic number.

It is an amenable number.

42511164 is an abundant number, since it is smaller than the sum of its proper divisors (57939396).

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

42511164 is a wasteful number, since it uses less digits than its factorization.

42511164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44929 (or 44927 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 42511164 is about 6520.0585886938. The cubic root of 42511164 is about 349.0071563353.

Adding to 42511164 its reverse (46111524), we get a palindrome (88622688).

The spelling of 42511164 in words is "forty-two million, five hundred eleven thousand, one hundred sixty-four".