42121230033432 has 32 divisors (see below), whose sum is σ = 114876081910080. Its totient is φ = 12764009100960.

The previous prime is 42121230033413. The next prime is 42121230033433. The reversal of 42121230033432 is 23433003212124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42121230033432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42121230033433) 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, 79775056618 + ... + 79775057145.

It is an arithmetic number, because the mean of its divisors is an integer number (3589877559690).

Almost surely, 2^{42121230033432} is an apocalyptic number.

It is an amenable number.

42121230033432 is an abundant number, since it is smaller than the sum of its proper divisors (72754851876648).

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

42121230033432 is a wasteful number, since it uses less digits than its factorization.

42121230033432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159550113783 (or 159550113779 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 42121230033432 its reverse (23433003212124), we get a palindrome (65554233245556).

The spelling of 42121230033432 in words is "forty-two trillion, one hundred twenty-one billion, two hundred thirty million, thirty-three thousand, four hundred thirty-two".