42432021243 has 12 divisors (see below), whose sum is σ = 61292682880. Its totient is φ = 28287097776.

The previous prime is 42432021239. The next prime is 42432021277. The reversal of 42432021243 is 34212023424.

42432021243 is a `hidden beast` number, since 424 + 3 + 20 + 212 + 4 + 3 = 666.

42432021243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42432021243 - 2² = 42432021239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42432021223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331593 + ... + 441381.

Almost surely, 2^42432021243 is an apocalyptic number.

42432021243 is a deficient number, since it is larger than the sum of its proper divisors (18860661637).

42432021243 is a wasteful number, since it uses less digits than its factorization.

42432021243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152738 (or 152735 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 42432021243 its reverse (34212023424), we get a palindrome (76644044667).

The spelling of 42432021243 in words is "forty-two billion, four hundred thirty-two million, twenty-one thousand, two hundred forty-three".