42861131 has 8 divisors (see below), whose sum is σ = 47771280. Its totient is φ = 38216448.

The previous prime is 42861109. The next prime is 42861149. The reversal of 42861131 is 13116824.

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

It is a de Polignac number, because none of the positive numbers 2^k-42861131 is a prime.

It is a super-3 number, since 3×42861131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42861131.

It is not an unprimeable number, because it can be changed into a prime (42861151) 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, 66026 + ... + 66671.

It is an arithmetic number, because the mean of its divisors is an integer number (5971410).

Almost surely, 2^42861131 is an apocalyptic number.

42861131 is a deficient number, since it is larger than the sum of its proper divisors (4910149).

42861131 is a wasteful number, since it uses less digits than its factorization.

42861131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132733.

The product of its digits is 1152, while the sum is 26.

The square root of 42861131 is about 6546.8412994359. The cubic root of 42861131 is about 349.9622571546.

Adding to 42861131 its reverse (13116824), we get a palindrome (55977955).

The spelling of 42861131 in words is "forty-two million, eight hundred sixty-one thousand, one hundred thirty-one".