382178121 has 12 divisors (see below), whose sum is σ = 551784528. Its totient is φ = 235186224.

The previous prime is 382178081. The next prime is 382178123. The reversal of 382178121 is 121871283.

It is not a de Polignac number, because 382178121 - 2⁶ = 382178057 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (382178123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376395 + ... + 377408.

It is an arithmetic number, because the mean of its divisors is an integer number (45982044).

Almost surely, 2^382178121 is an apocalyptic number.

It is an amenable number.

382178121 is a deficient number, since it is larger than the sum of its proper divisors (169606407).

382178121 is a wasteful number, since it uses less digits than its factorization.

382178121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753832 (or 753819 counting only the distinct ones).

The product of its digits is 5376, while the sum is 33.

The square root of 382178121 is about 19549.3764862207. The cubic root of 382178121 is about 725.6969095845.

It can be divided in two parts, 382 and 178121, that added together give a triangular number (178503 = T₅₉₇).

The spelling of 382178121 in words is "three hundred eighty-two million, one hundred seventy-eight thousand, one hundred twenty-one".