42751131 has 8 divisors (see below), whose sum is σ = 57033744. Its totient is φ = 28484640.

The previous prime is 42751129. The next prime is 42751147. The reversal of 42751131 is 13115724.

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

It is not a de Polignac number, because 42751131 - 2¹ = 42751129 is a prime.

It is a super-2 number, since 2×42751131² = 3655318403558322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42751171) 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, 5145 + ... + 10581.

It is an arithmetic number, because the mean of its divisors is an integer number (7129218).

Almost surely, 2^42751131 is an apocalyptic number.

42751131 is a deficient number, since it is larger than the sum of its proper divisors (14282613).

42751131 is a wasteful number, since it uses less digits than its factorization.

42751131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061.

The product of its digits is 840, while the sum is 24.

The square root of 42751131 is about 6538.4349044706. The cubic root of 42751131 is about 349.6626163791.

Adding to 42751131 its reverse (13115724), we get a palindrome (55866855).

The spelling of 42751131 in words is "forty-two million, seven hundred fifty-one thousand, one hundred thirty-one".