126220043 has 4 divisors (see below), whose sum is σ = 126245160. Its totient is φ = 126194928.

The previous prime is 126220013. The next prime is 126220049. The reversal of 126220043 is 340022621.

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 126220043 - 2⁸ = 126219787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126219997 and 126220024.

It is not an unprimeable number, because it can be changed into a prime (126220049) 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, 2138 + ... + 16031.

It is an arithmetic number, because the mean of its divisors is an integer number (31561290).

Almost surely, 2^126220043 is an apocalyptic number.

126220043 is a deficient number, since it is larger than the sum of its proper divisors (25117).

126220043 is an equidigital number, since it uses as much as digits as its factorization.

126220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25116.

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

The square root of 126220043 is about 11234.7693790304. The cubic root of 126220043 is about 501.6214600506.

Adding to 126220043 its reverse (340022621), we get a palindrome (466242664).

The spelling of 126220043 in words is "one hundred twenty-six million, two hundred twenty thousand, forty-three".