42521151 has 8 divisors (see below), whose sum is σ = 57023280. Its totient is φ = 28183232.

The previous prime is 42521117. The next prime is 42521153. The reversal of 42521151 is 15112524.

42521151 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.

It is a cyclic number.

It is not a de Polignac number, because 42521151 - 2¹⁹ = 41996863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521153) 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 7 ways as a sum of consecutive naturals, for example, 40446 + ... + 41483.

It is an arithmetic number, because the mean of its divisors is an integer number (7127910).

Almost surely, 2^42521151 is an apocalyptic number.

42521151 is a deficient number, since it is larger than the sum of its proper divisors (14502129).

42521151 is a wasteful number, since it uses less digits than its factorization.

42521151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82105.

The product of its digits is 400, while the sum is 21.

The square root of 42521151 is about 6520.8244110695. The cubic root of 42521151 is about 349.0344845414.

Adding to 42521151 its reverse (15112524), we get a palindrome (57633675).

The spelling of 42521151 in words is "forty-two million, five hundred twenty-one thousand, one hundred fifty-one".