385750121 has 2 divisors, whose sum is σ = 385750122. Its totient is φ = 385750120.

The previous prime is 385750109. The next prime is 385750129. The reversal of 385750121 is 121057583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384160000 + 1590121 = 19600^2 + 1261^2 .

It is a cyclic number.

It is not a de Polignac number, because 385750121 - 2¹⁴ = 385733737 is a prime.

It is not a weakly prime, because it can be changed into another prime (385750129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192875060 + 192875061.

It is an arithmetic number, because the mean of its divisors is an integer number (192875061).

Almost surely, 2^385750121 is an apocalyptic number.

It is an amenable number.

385750121 is a deficient number, since it is larger than the sum of its proper divisors (1).

385750121 is an equidigital number, since it uses as much as digits as its factorization.

385750121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 385750121 is about 19640.5224217687. The cubic root of 385750121 is about 727.9507933019.

The spelling of 385750121 in words is "three hundred eighty-five million, seven hundred fifty thousand, one hundred twenty-one".