238422021 has 8 divisors (see below), whose sum is σ = 328858080. Its totient is φ = 153466992.

The previous prime is 238421999. The next prime is 238422077. The reversal of 238422021 is 120224832.

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

It is not a de Polignac number, because 238422021 - 2¹⁵ = 238389253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238421982 and 238422000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238421021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370155 + ... + 1370328.

It is an arithmetic number, because the mean of its divisors is an integer number (41107260).

Almost surely, 2^238422021 is an apocalyptic number.

It is an amenable number.

238422021 is a deficient number, since it is larger than the sum of its proper divisors (90436059).

238422021 is a wasteful number, since it uses less digits than its factorization.

238422021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740515.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 238422021 is about 15440.9203417413. The cubic root of 238422021 is about 620.0815198048.

Adding to 238422021 its reverse (120224832), we get a palindrome (358646853).

The spelling of 238422021 in words is "two hundred thirty-eight million, four hundred twenty-two thousand, twenty-one".