42581134 has 4 divisors (see below), whose sum is σ = 63871704. Its totient is φ = 21290566.

The previous prime is 42581129. The next prime is 42581153. The reversal of 42581134 is 43118524.

42581134 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.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10645282 + ... + 10645285.

It is an arithmetic number, because the mean of its divisors is an integer number (15967926).

Almost surely, 2^42581134 is an apocalyptic number.

42581134 is a deficient number, since it is larger than the sum of its proper divisors (21290570).

42581134 is a wasteful number, since it uses less digits than its factorization.

42581134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21290569.

The product of its digits is 3840, while the sum is 28.

The square root of 42581134 is about 6525.4221319391. The cubic root of 42581134 is about 349.1985307325.

Adding to 42581134 its reverse (43118524), we get a palindrome (85699658).

The spelling of 42581134 in words is "forty-two million, five hundred eighty-one thousand, one hundred thirty-four".