1142320023 has 64 divisors (see below), whose sum is σ = 1893068800. Its totient is φ = 676045440.

The previous prime is 1142320019. The next prime is 1142320031. The reversal of 1142320023 is 3200232411.

It is not a de Polignac number, because 1142320023 - 2² = 1142320019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142319978 and 1142320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142320723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3013848 + ... + 3014226.

It is an arithmetic number, because the mean of its divisors is an integer number (29579200).

Almost surely, 2^1142320023 is an apocalyptic number.

1142320023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1142320023 is a deficient number, since it is larger than the sum of its proper divisors (750748777).

1142320023 is a wasteful number, since it uses less digits than its factorization.

1142320023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1142320023 is about 33798.2251457085. The cubic root of 1142320023 is about 1045.3521010033.

Adding to 1142320023 its reverse (3200232411), we get a palindrome (4342552434).

The spelling of 1142320023 in words is "one billion, one hundred forty-two million, three hundred twenty thousand, twenty-three".