42323251 has 4 divisors (see below), whose sum is σ = 44812872. Its totient is φ = 39833632.

The previous prime is 42323249. The next prime is 42323257. The reversal of 42323251 is 15232324.

42323251 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 cyclic number.

It is not a de Polignac number, because 42323251 - 2¹ = 42323249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42323257) 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, 1244785 + ... + 1244818.

It is an arithmetic number, because the mean of its divisors is an integer number (11203218).

Almost surely, 2^42323251 is an apocalyptic number.

42323251 is a deficient number, since it is larger than the sum of its proper divisors (2489621).

42323251 is a wasteful number, since it uses less digits than its factorization.

42323251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489620.

The product of its digits is 1440, while the sum is 22.

The square root of 42323251 is about 6505.6322521335. The cubic root of 42323251 is about 348.4921555197.

Adding to 42323251 its reverse (15232324), we get a palindrome (57555575).

The spelling of 42323251 in words is "forty-two million, three hundred twenty-three thousand, two hundred fifty-one".