42423004032 has 128 divisors (see below), whose sum is σ = 116719293600. Its totient is φ = 13636116480.

The previous prime is 42423004007. The next prime is 42423004033. The reversal of 42423004032 is 23040032424.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×42423004032² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 42423003993 and 42423004011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42423004033) 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, 11100682 + ... + 11104502.

Almost surely, 2^42423004032 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 42423004032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58359646800).

42423004032 is an abundant number, since it is smaller than the sum of its proper divisors (74296289568).

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

42423004032 is a wasteful number, since it uses less digits than its factorization.

42423004032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864 (or 4852 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 42423004032 its reverse (23040032424), we get a palindrome (65463036456).

The spelling of 42423004032 in words is "forty-two billion, four hundred twenty-three million, four thousand, thirty-two".