1042443103123 has 4 divisors (see below), whose sum is σ = 1043831177248. Its totient is φ = 1041055029000.

The previous prime is 1042443103103. The next prime is 1042443103127. The reversal of 1042443103123 is 3213013442401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042443103123 is a prime.

It is a super-2 number, since 2×1042443103123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042443103091 and 1042443103100.

It is not an unprimeable number, because it can be changed into a prime (1042443103127) 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, 694035936 + ... + 694037437.

It is an arithmetic number, because the mean of its divisors is an integer number (260957794312).

Almost surely, 2^{1042443103123} is an apocalyptic number.

1042443103123 is a deficient number, since it is larger than the sum of its proper divisors (1388074125).

1042443103123 is an equidigital number, since it uses as much as digits as its factorization.

1042443103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388074124.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1042443103123 its reverse (3213013442401), we get a palindrome (4255456545524).

The spelling of 1042443103123 in words is "one trillion, forty-two billion, four hundred forty-three million, one hundred three thousand, one hundred twenty-three".