42521334 has 8 divisors (see below), whose sum is σ = 85042680. Its totient is φ = 14173776.

The previous prime is 42521329. The next prime is 42521341. The reversal of 42521334 is 43312524.

42521334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

42521334 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3543439 + ... + 3543450.

It is an arithmetic number, because the mean of its divisors is an integer number (10630335).

Almost surely, 2^42521334 is an apocalyptic number.

42521334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42521334 is a wasteful number, since it uses less digits than its factorization.

42521334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7086894.

The product of its digits is 2880, while the sum is 24.

The square root of 42521334 is about 6520.8384430225. The cubic root of 42521334 is about 349.0349852586.

Adding to 42521334 its reverse (43312524), we get a palindrome (85833858).

The spelling of 42521334 in words is "forty-two million, five hundred twenty-one thousand, three hundred thirty-four".