238340129 has 2 divisors, whose sum is σ = 238340130. Its totient is φ = 238340128.

The previous prime is 238340107. The next prime is 238340147. The reversal of 238340129 is 921043832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157753600 + 80586529 = 12560^2 + 8977^2 .

It is a cyclic number.

It is not a de Polignac number, because 238340129 - 2¹⁶ = 238274593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238340095 and 238340104.

It is not a weakly prime, because it can be changed into another prime (238340159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119170064 + 119170065.

It is an arithmetic number, because the mean of its divisors is an integer number (119170065).

Almost surely, 2^238340129 is an apocalyptic number.

It is an amenable number.

238340129 is a deficient number, since it is larger than the sum of its proper divisors (1).

238340129 is an equidigital number, since it uses as much as digits as its factorization.

238340129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 238340129 is about 15438.2683290582. The cubic root of 238340129 is about 620.0105175115.

The spelling of 238340129 in words is "two hundred thirty-eight million, three hundred forty thousand, one hundred twenty-nine".