126504043 has 4 divisors (see below), whose sum is σ = 128105440. Its totient is φ = 124902648.

The previous prime is 126504029. The next prime is 126504121. The reversal of 126504043 is 340405621.

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 126504043 - 2⁵ = 126504011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126503999 and 126504017.

It is not an unprimeable number, because it can be changed into a prime (126504013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800580 + ... + 800737.

It is an arithmetic number, because the mean of its divisors is an integer number (32026360).

Almost surely, 2^126504043 is an apocalyptic number.

126504043 is a deficient number, since it is larger than the sum of its proper divisors (1601397).

126504043 is an equidigital number, since it uses as much as digits as its factorization.

126504043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601396.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 126504043 is about 11247.4016110389. The cubic root of 126504043 is about 501.9974008214.

Adding to 126504043 its reverse (340405621), we get a palindrome (466909664).

The spelling of 126504043 in words is "one hundred twenty-six million, five hundred four thousand, forty-three".