8742421133 has 8 divisors (see below), whose sum is σ = 8758189440. Its totient is φ = 8726667840.

The previous prime is 8742421123. The next prime is 8742421147. The reversal of 8742421133 is 3311242478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8742421133 - 2⁶ = 8742421069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8742421093 and 8742421102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742421123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012678 + ... + 2017016.

It is an arithmetic number, because the mean of its divisors is an integer number (1094773680).

Almost surely, 2^8742421133 is an apocalyptic number.

It is an amenable number.

8742421133 is a deficient number, since it is larger than the sum of its proper divisors (15768307).

8742421133 is a wasteful number, since it uses less digits than its factorization.

8742421133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507.

The product of its digits is 32256, while the sum is 35.

The square root of 8742421133 is about 93500.9151452541. The cubic root of 8742421133 is about 2060.0475318941.

The spelling of 8742421133 in words is "eight billion, seven hundred forty-two million, four hundred twenty-one thousand, one hundred thirty-three".