42511143 has 8 divisors (see below), whose sum is σ = 56723968. Its totient is φ = 28319544.

The previous prime is 42511121. The next prime is 42511163. The reversal of 42511143 is 34111524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42511143 - 2⁸ = 42510887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42511103) 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, 180 + ... + 9222.

It is an arithmetic number, because the mean of its divisors is an integer number (7090496).

Almost surely, 2^42511143 is an apocalyptic number.

42511143 is a deficient number, since it is larger than the sum of its proper divisors (14212825).

42511143 is a wasteful number, since it uses less digits than its factorization.

42511143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10613.

The product of its digits is 480, while the sum is 21.

The square root of 42511143 is about 6520.0569782786. The cubic root of 42511143 is about 349.0070988668.

Adding to 42511143 its reverse (34111524), we get a palindrome (76622667).

The spelling of 42511143 in words is "forty-two million, five hundred eleven thousand, one hundred forty-three".