381180042 has 12 divisors (see below), whose sum is σ = 825890130. Its totient is φ = 127060008.

The previous prime is 381179983. The next prime is 381180053. The reversal of 381180042 is 240081183.

It can be written as a sum of positive squares in only one way, i.e., 347412321 + 33767721 = 18639^2 + 5811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381179988 and 381180015.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 10588317 + ... + 10588352.

Almost surely, 2^381180042 is an apocalyptic number.

381180042 is an abundant number, since it is smaller than the sum of its proper divisors (444710088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381180042 is a wasteful number, since it uses less digits than its factorization.

381180042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21176677 (or 21176674 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 381180042 is about 19523.8326667691. The cubic root of 381180042 is about 725.0646265022.

The spelling of 381180042 in words is "three hundred eighty-one million, one hundred eighty thousand, forty-two".