38421021243 has 8 divisors (see below), whose sum is σ = 55885121856. Its totient is φ = 23285467400.

The previous prime is 38421021217. The next prime is 38421021391. The reversal of 38421021243 is 34212012483.

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 38421021243 - 2⁸ = 38421020987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38421021243.

It is not an unprimeable number, because it can be changed into a prime (38421021043) 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, 582136653 + ... + 582136718.

It is an arithmetic number, because the mean of its divisors is an integer number (6985640232).

Almost surely, 2^38421021243 is an apocalyptic number.

38421021243 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

38421021243 is a deficient number, since it is larger than the sum of its proper divisors (17464100613).

38421021243 is a wasteful number, since it uses less digits than its factorization.

38421021243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164273385.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 38421021243 in words is "thirty-eight billion, four hundred twenty-one million, twenty-one thousand, two hundred forty-three".