1242104043 has 16 divisors (see below), whose sum is σ = 1759605120. Its totient is φ = 777151296.

The previous prime is 1242104011. The next prime is 1242104057. The reversal of 1242104043 is 3404012421.

It is not a de Polignac number, because 1242104043 - 2⁵ = 1242104011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242104543) 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 15 ways as a sum of consecutive naturals, for example, 95730 + ... + 107927.

It is an arithmetic number, because the mean of its divisors is an integer number (109975320).

Almost surely, 2^1242104043 is an apocalyptic number.

1242104043 is a deficient number, since it is larger than the sum of its proper divisors (517501077).

1242104043 is a wasteful number, since it uses less digits than its factorization.

1242104043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203786.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242104043 is about 35243.4964638868. The cubic root of 1242104043 is about 1074.9443758491.

Adding to 1242104043 its reverse (3404012421), we get a palindrome (4646116464).

The spelling of 1242104043 in words is "one billion, two hundred forty-two million, one hundred four thousand, forty-three".