1423021044432 has 160 divisors (see below), whose sum is σ = 4056567613056. Its totient is φ = 427058380800.

The previous prime is 1423021044413. The next prime is 1423021044443. The reversal of 1423021044432 is 2344401203241.

It is a self number, because there is not a number n which added to its sum of digits gives 1423021044432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176090632 + ... + 176098712.

Almost surely, 2^{1423021044432} is an apocalyptic number.

1423021044432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423021044432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2028283806528).

1423021044432 is an abundant number, since it is smaller than the sum of its proper divisors (2633546568624).

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

1423021044432 is a wasteful number, since it uses less digits than its factorization.

1423021044432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15029 (or 15023 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1423021044432 its reverse (2344401203241), we get a palindrome (3767422247673).

The spelling of 1423021044432 in words is "one trillion, four hundred twenty-three billion, twenty-one million, forty-four thousand, four hundred thirty-two".