32420442432 has 56 divisors (see below), whose sum is σ = 98033246656. Its totient is φ = 9262983168.

The previous prime is 32420442407. The next prime is 32420442437. The reversal of 32420442432 is 23424402423.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 32420442432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32420442437) 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, 12059833 + ... + 12062520.

Almost surely, 2^32420442432 is an apocalyptic number.

32420442432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

32420442432 is an abundant number, since it is smaller than the sum of its proper divisors (65612804224).

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

32420442432 is a wasteful number, since it uses less digits than its factorization.

32420442432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24122375 (or 24122365 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 32420442432 its reverse (23424402423), we get a palindrome (55844844855).

The spelling of 32420442432 in words is "thirty-two billion, four hundred twenty million, four hundred forty-two thousand, four hundred thirty-two".