387218042 has 8 divisors (see below), whose sum is σ = 586578132. Its totient is φ = 191692000.

The previous prime is 387218021. The next prime is 387218089. The reversal of 387218042 is 240812783.

It can be written as a sum of positive squares in 2 ways, for example, as 360582121 + 26635921 = 18989^2 + 5161^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 387217993 and 387218011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958259 + ... + 958662.

Almost surely, 2^387218042 is an apocalyptic number.

387218042 is a deficient number, since it is larger than the sum of its proper divisors (199360090).

387218042 is a wasteful number, since it uses less digits than its factorization.

387218042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917024.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 387218042 is about 19677.8566414130. The cubic root of 387218042 is about 728.8729979601.

The spelling of 387218042 in words is "three hundred eighty-seven million, two hundred eighteen thousand, forty-two".