42345231 has 8 divisors (see below), whose sum is σ = 58915200. Its totient is φ = 27002712.

The previous prime is 42345223. The next prime is 42345263. The reversal of 42345231 is 13254324.

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

It is not a de Polignac number, because 42345231 - 2³ = 42345223 is a prime.

It is a super-2 number, since 2×42345231² = 3586237176886722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42345031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306781 + ... + 306918.

It is an arithmetic number, because the mean of its divisors is an integer number (7364400).

Almost surely, 2^42345231 is an apocalyptic number.

42345231 is a deficient number, since it is larger than the sum of its proper divisors (16569969).

42345231 is a wasteful number, since it uses less digits than its factorization.

42345231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613725.

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

The square root of 42345231 is about 6507.3213383081. The cubic root of 42345231 is about 348.5524732865.

Adding to 42345231 its reverse (13254324), we get a palindrome (55599555).

It can be divided in two parts, 423 and 45231, that added together give a palindrome (45654).

The spelling of 42345231 in words is "forty-two million, three hundred forty-five thousand, two hundred thirty-one".