381212842 has 8 divisors (see below), whose sum is σ = 572152932. Its totient is φ = 190495200.

The previous prime is 381212837. The next prime is 381212849. The reversal of 381212842 is 248212183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 269255281 + 111957561 = 16409^2 + 10581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (381212849) 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, 51259 + ... + 58222.

Almost surely, 2^381212842 is an apocalyptic number.

381212842 is a deficient number, since it is larger than the sum of its proper divisors (190940090).

381212842 is a wasteful number, since it uses less digits than its factorization.

381212842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111224.

The product of its digits is 6144, while the sum is 31.

The square root of 381212842 is about 19524.6726477040. The cubic root of 381212842 is about 725.0854228320.

The spelling of 381212842 in words is "three hundred eighty-one million, two hundred twelve thousand, eight hundred forty-two".