7872421083 has 4 divisors (see below), whose sum is σ = 10496561448. Its totient is φ = 5248280720.

The previous prime is 7872421079. The next prime is 7872421093. The reversal of 7872421083 is 3801242787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7872421083 - 2² = 7872421079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7872421003) 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, 1312070178 + ... + 1312070183.

It is an arithmetic number, because the mean of its divisors is an integer number (2624140362).

Almost surely, 2^7872421083 is an apocalyptic number.

7872421083 is a deficient number, since it is larger than the sum of its proper divisors (2624140365).

7872421083 is a wasteful number, since it uses less digits than its factorization.

7872421083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624140364.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 7872421083 is about 88726.6650055100. The cubic root of 7872421083 is about 1989.3114022837.

The spelling of 7872421083 in words is "seven billion, eight hundred seventy-two million, four hundred twenty-one thousand, eighty-three".