42133402143221 has 4 divisors (see below), whose sum is σ = 42137665372992. Its totient is φ = 42129138913452.

The previous prime is 42133402143191. The next prime is 42133402143263. The reversal of 42133402143221 is 12234120433124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42133402143221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42133402146221) 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, 2131600061 + ... + 2131619826.

It is an arithmetic number, because the mean of its divisors is an integer number (10534416343248).

Almost surely, 2^{42133402143221} is an apocalyptic number.

It is an amenable number.

42133402143221 is a deficient number, since it is larger than the sum of its proper divisors (4263229771).

42133402143221 is an equidigital number, since it uses as much as digits as its factorization.

42133402143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263229770.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 42133402143221 its reverse (12234120433124), we get a palindrome (54367522576345).

The spelling of 42133402143221 in words is "forty-two trillion, one hundred thirty-three billion, four hundred two million, one hundred forty-three thousand, two hundred twenty-one".