42527131 has 4 divisors (see below), whose sum is σ = 42540264. Its totient is φ = 42514000.

The previous prime is 42527077. The next prime is 42527143. The reversal of 42527131 is 13172524.

It is a happy number.

42527131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42527131 - 2⁷ = 42527003 is a prime.

It is a super-2 number, since 2×42527131² = 3617113742182322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42527096 and 42527105.

It is not an unprimeable number, because it can be changed into a prime (42527231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136 + ... + 9466.

It is an arithmetic number, because the mean of its divisors is an integer number (10635066).

Almost surely, 2^42527131 is an apocalyptic number.

42527131 is a deficient number, since it is larger than the sum of its proper divisors (13133).

42527131 is an equidigital number, since it uses as much as digits as its factorization.

42527131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132.

The product of its digits is 1680, while the sum is 25.

The square root of 42527131 is about 6521.2829259280. The cubic root of 42527131 is about 349.0508460331.

Adding to 42527131 its reverse (13172524), we get a palindrome (55699655).

It can be divided in two parts, 425 and 27131, that added together give a square (27556 = 166²).

The spelling of 42527131 in words is "forty-two million, five hundred twenty-seven thousand, one hundred thirty-one".