126431105 has 8 divisors (see below), whose sum is σ = 151780200. Its totient is φ = 101102976.

The previous prime is 126431087. The next prime is 126431143. The reversal of 126431105 is 501134621.

It can be written as a sum of positive squares in 4 ways, for example, as 38390416 + 88040689 = 6196^2 + 9383^2 .

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 126431105 - 2⁸ = 126430849 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 15491 + ... + 22199.

It is an arithmetic number, because the mean of its divisors is an integer number (18972525).

Almost surely, 2^126431105 is an apocalyptic number.

It is an amenable number.

126431105 is a deficient number, since it is larger than the sum of its proper divisors (25349095).

126431105 is an equidigital number, since it uses as much as digits as its factorization.

126431105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 126431105 is about 11244.1587057458. The cubic root of 126431105 is about 501.9009039698.

Adding to 126431105 its reverse (501134621), we get a palindrome (627565726).

The spelling of 126431105 in words is "one hundred twenty-six million, four hundred thirty-one thousand, one hundred five".