42811140 has 48 divisors (see below), whose sum is σ = 120371328. Its totient is φ = 11368704.

The previous prime is 42811133. The next prime is 42811141. The reversal of 42811140 is 4111824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42811141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14424 + ... + 17136.

It is an arithmetic number, because the mean of its divisors is an integer number (2507736).

Almost surely, 2^42811140 is an apocalyptic number.

It is an amenable number.

42811140 is an abundant number, since it is smaller than the sum of its proper divisors (77560188).

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

42811140 is a wasteful number, since it uses less digits than its factorization.

42811140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 42811140 is about 6543.0222374679. The cubic root of 42811140 is about 349.8261449480.

Adding to 42811140 its reverse (4111824), we get a palindrome (46922964).

The spelling of 42811140 in words is "forty-two million, eight hundred eleven thousand, one hundred forty".