1423543120 has 20 divisors (see below), whose sum is σ = 3309737940. Its totient is φ = 569417216.

The previous prime is 1423543111. The next prime is 1423543123. The reversal of 1423543120 is 213453241.

It can be written as a sum of positive squares in 2 ways, for example, as 1055210256 + 368332864 = 32484^2 + 19192^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423543123) 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, 8897065 + ... + 8897224.

It is an arithmetic number, because the mean of its divisors is an integer number (165486897).

Almost surely, 2^1423543120 is an apocalyptic number.

1423543120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423543120 is an abundant number, since it is smaller than the sum of its proper divisors (1886194820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423543120 is a wasteful number, since it uses less digits than its factorization.

1423543120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17794302 (or 17794296 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1423543120 is about 37729.8703946886. The cubic root of 1423543120 is about 1124.9249319458.

Adding to 1423543120 its reverse (213453241), we get a palindrome (1636996361).

The spelling of 1423543120 in words is "one billion, four hundred twenty-three million, five hundred forty-three thousand, one hundred twenty".