1320442123 has 48 divisors (see below), whose sum is σ = 1844640000. Its totient is φ = 916755840.

The previous prime is 1320442093. The next prime is 1320442153. The reversal of 1320442123 is 3212440231.

It is an interprime number because it is at equal distance from previous prime (1320442093) and next prime (1320442153).

It is not a de Polignac number, because 1320442123 - 2⁹ = 1320441611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320442094 and 1320442103.

It is not an unprimeable number, because it can be changed into a prime (1320442153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 375628 + ... + 379126.

It is an arithmetic number, because the mean of its divisors is an integer number (38430000).

Almost surely, 2^1320442123 is an apocalyptic number.

1320442123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1320442123 is a deficient number, since it is larger than the sum of its proper divisors (524197877).

1320442123 is a wasteful number, since it uses less digits than its factorization.

1320442123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572 (or 3559 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1320442123 is about 36337.8882572997. Note that the first 3 decimals coincide. The cubic root of 1320442123 is about 1097.0837694985.

Adding to 1320442123 its reverse (3212440231), we get a palindrome (4532882354).

The spelling of 1320442123 in words is "one billion, three hundred twenty million, four hundred forty-two thousand, one hundred twenty-three".