1042235123 has 4 divisors (see below), whose sum is σ = 1053945720. Its totient is φ = 1030524528.

The previous prime is 1042235113. The next prime is 1042235141. The reversal of 1042235123 is 3215322401.

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 1042235123 - 2¹⁰ = 1042234099 is a prime.

It is a super-2 number, since 2×1042235123² = 2172508103229650258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042235113) 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, 5855165 + ... + 5855342.

It is an arithmetic number, because the mean of its divisors is an integer number (263486430).

Almost surely, 2^1042235123 is an apocalyptic number.

1042235123 is a deficient number, since it is larger than the sum of its proper divisors (11710597).

1042235123 is an equidigital number, since it uses as much as digits as its factorization.

1042235123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11710596.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1042235123 is about 32283.6665049062. Note that the first 3 decimals coincide. The cubic root of 1042235123 is about 1013.8846972623.

Adding to 1042235123 its reverse (3215322401), we get a palindrome (4257557524).

The spelling of 1042235123 in words is "one billion, forty-two million, two hundred thirty-five thousand, one hundred twenty-three".