42321121432 has 16 divisors (see below), whose sum is σ = 79767561600. Its totient is φ = 21049771680.

The previous prime is 42321121391. The next prime is 42321121439. The reversal of 42321121432 is 23412112324.

It is a junction number, because it is equal to n+sod(n) for n = 42321121397 and 42321121406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42321121439) 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, 13847007 + ... + 13850062.

It is an arithmetic number, because the mean of its divisors is an integer number (4985472600).

Almost surely, 2^42321121432 is an apocalyptic number.

It is an amenable number.

42321121432 is a deficient number, since it is larger than the sum of its proper divisors (37446440168).

42321121432 is a wasteful number, since it uses less digits than its factorization.

42321121432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27697266 (or 27697262 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 42321121432 its reverse (23412112324), we get a palindrome (65733233756).

The spelling of 42321121432 in words is "forty-two billion, three hundred twenty-one million, one hundred twenty-one thousand, four hundred thirty-two".