381472421 has 8 divisors (see below), whose sum is σ = 422013888. Its totient is φ = 341908000.

The previous prime is 381472417. The next prime is 381472433. The reversal of 381472421 is 124274183.

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 381472421 - 2² = 381472417 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 (381472321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243440 + ... + 245001.

It is an arithmetic number, because the mean of its divisors is an integer number (52751736).

Almost surely, 2^381472421 is an apocalyptic number.

It is an amenable number.

381472421 is a deficient number, since it is larger than the sum of its proper divisors (40541467).

381472421 is a wasteful number, since it uses less digits than its factorization.

381472421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488523.

The product of its digits is 10752, while the sum is 32.

The square root of 381472421 is about 19531.3189774782. The cubic root of 381472421 is about 725.2499627982.

The spelling of 381472421 in words is "three hundred eighty-one million, four hundred seventy-two thousand, four hundred twenty-one".