38403121 has 2 divisors, whose sum is σ = 38403122. Its totient is φ = 38403120.

The previous prime is 38403097. The next prime is 38403137. The reversal of 38403121 is 12130483.

38403121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37271025 + 1132096 = 6105^2 + 1064^2 .

It is a cyclic number.

It is not a de Polignac number, because 38403121 - 2¹¹ = 38401073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38403092 and 38403101.

It is not a weakly prime, because it can be changed into another prime (38403181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19201560 + 19201561.

It is an arithmetic number, because the mean of its divisors is an integer number (19201561).

Almost surely, 2^38403121 is an apocalyptic number.

It is an amenable number.

38403121 is a deficient number, since it is larger than the sum of its proper divisors (1).

38403121 is an equidigital number, since it uses as much as digits as its factorization.

38403121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 38403121 is about 6197.0251734199. The cubic root of 38403121 is about 337.3822059889.

The spelling of 38403121 in words is "thirty-eight million, four hundred three thousand, one hundred twenty-one".