1423021444 has 24 divisors (see below), whose sum is σ = 2738913408. Its totient is φ = 642804000.

The previous prime is 1423021441. The next prime is 1423021447. The reversal of 1423021444 is 4441203241.

It is an interprime number because it is at equal distance from previous prime (1423021441) and next prime (1423021447).

It is not an unprimeable number, because it can be changed into a prime (1423021441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288682 + ... + 293569.

It is an arithmetic number, because the mean of its divisors is an integer number (114121392).

Almost surely, 2^1423021444 is an apocalyptic number.

It is an amenable number.

1423021444 is a deficient number, since it is larger than the sum of its proper divisors (1315891964).

1423021444 is a wasteful number, since it uses less digits than its factorization.

1423021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582315 (or 582313 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1423021444 is about 37722.9564588991. The cubic root of 1423021444 is about 1124.7875006705.

Adding to 1423021444 its reverse (4441203241), we get a palindrome (5864224685).

The spelling of 1423021444 in words is "one billion, four hundred twenty-three million, twenty-one thousand, four hundred forty-four".