1423440512 has 64 divisors (see below), whose sum is σ = 3062374560. Its totient is φ = 655150080.

The previous prime is 1423440493. The next prime is 1423440517. The reversal of 1423440512 is 2150443241.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1423440517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736187 + ... + 738117.

Almost surely, 2^1423440512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423440512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1531187280).

1423440512 is an abundant number, since it is smaller than the sum of its proper divisors (1638934048).

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

1423440512 is a wasteful number, since it uses less digits than its factorization.

1423440512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1423440512 is about 37728.5105987501. The cubic root of 1423440512 is about 1124.8979033603.

Adding to 1423440512 its reverse (2150443241), we get a palindrome (3573883753).

The spelling of 1423440512 in words is "one billion, four hundred twenty-three million, four hundred forty thousand, five hundred twelve".