42431123 has 8 divisors (see below), whose sum is σ = 51045120. Its totient is φ = 34455240.

The previous prime is 42431117. The next prime is 42431141. The reversal of 42431123 is 32113424.

42431123 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 42431123 - 2⁸ = 42430867 is a prime.

It is a super-2 number, since 2×42431123² = 3600800398082258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42431095 and 42431104.

It is not an unprimeable number, because it can be changed into a prime (42431143) 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, 159383 + ... + 159648.

It is an arithmetic number, because the mean of its divisors is an integer number (6380640).

Almost surely, 2^42431123 is an apocalyptic number.

42431123 is a deficient number, since it is larger than the sum of its proper divisors (8613997).

42431123 is a wasteful number, since it uses less digits than its factorization.

42431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319057.

The product of its digits is 576, while the sum is 20.

The square root of 42431123 is about 6513.9176384109. The cubic root of 42431123 is about 348.7879791461.

Adding to 42431123 its reverse (32113424), we get a palindrome (74544547).

The spelling of 42431123 in words is "forty-two million, four hundred thirty-one thousand, one hundred twenty-three".