238000042 has 32 divisors (see below), whose sum is σ = 444297600. Its totient is φ = 93296448.

The previous prime is 238000033. The next prime is 238000069. The reversal of 238000042 is 240000832.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 237999983 and 238000019.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7713 + ... + 23140.

It is an arithmetic number, because the mean of its divisors is an integer number (13884300).

Almost surely, 2^238000042 is an apocalyptic number.

238000042 is the 7714-th decagonal number.

238000042 is a deficient number, since it is larger than the sum of its proper divisors (206297558).

238000042 is a wasteful number, since it uses less digits than its factorization.

238000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30910.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 238000042 is about 15427.2499817693. The cubic root of 238000042 is about 619.7154799280.

Adding to 238000042 its reverse (240000832), we get a palindrome (478000874).

The spelling of 238000042 in words is "two hundred thirty-eight million, forty-two", and thus it is an aban number.