1020442323 has 16 divisors (see below), whose sum is σ = 1441359360. Its totient is φ = 639950976.

The previous prime is 1020442309. The next prime is 1020442327. The reversal of 1020442323 is 3232440201.

It is not a de Polignac number, because 1020442323 - 2⁹ = 1020441811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020442323.

It is not an unprimeable number, because it can be changed into a prime (1020442327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131218 + ... + 138776.

It is an arithmetic number, because the mean of its divisors is an integer number (90084960).

Almost surely, 2^1020442323 is an apocalyptic number.

1020442323 is a deficient number, since it is larger than the sum of its proper divisors (420917037).

1020442323 is a wasteful number, since it uses less digits than its factorization.

1020442323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1020442323 is about 31944.3629299443. The cubic root of 1020442323 is about 1006.7681958448.

Adding to 1020442323 its reverse (3232440201), we get a palindrome (4252882524).

The spelling of 1020442323 in words is "one billion, twenty million, four hundred forty-two thousand, three hundred twenty-three".