1442443123 has 4 divisors (see below), whose sum is σ = 1573574328. Its totient is φ = 1311311920.

The previous prime is 1442443117. The next prime is 1442443129. The reversal of 1442443123 is 3213442441.

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

It is an interprime number because it is at equal distance from previous prime (1442443117) and next prime (1442443129).

It is a cyclic number.

It is not a de Polignac number, because 1442443123 - 2²¹ = 1440345971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442443091 and 1442443100.

It is not an unprimeable number, because it can be changed into a prime (1442443129) 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, 65565586 + ... + 65565607.

It is an arithmetic number, because the mean of its divisors is an integer number (393393582).

Almost surely, 2^1442443123 is an apocalyptic number.

1442443123 is a deficient number, since it is larger than the sum of its proper divisors (131131205).

1442443123 is a wasteful number, since it uses less digits than its factorization.

1442443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131131204.

The product of its digits is 9216, while the sum is 28.

The square root of 1442443123 is about 37979.5092517004. The cubic root of 1442443123 is about 1129.8815034853.

Adding to 1442443123 its reverse (3213442441), we get a palindrome (4655885564).

The spelling of 1442443123 in words is "one billion, four hundred forty-two million, four hundred forty-three thousand, one hundred twenty-three".