148405321 has 2 divisors, whose sum is σ = 148405322. Its totient is φ = 148405320.

The previous prime is 148405319. The next prime is 148405337. The reversal of 148405321 is 123504841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85377600 + 63027721 = 9240^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 148405321 - 2¹ = 148405319 is a prime.

It is a super-2 number, since 2×148405321² = 44048278602226082, which contains 22 as substring.

Together with 148405319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 148405321.

It is not a weakly prime, because it can be changed into another prime (148405391) 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, 74202660 + 74202661.

It is an arithmetic number, because the mean of its divisors is an integer number (74202661).

Almost surely, 2^148405321 is an apocalyptic number.

It is an amenable number.

148405321 is a deficient number, since it is larger than the sum of its proper divisors (1).

148405321 is an equidigital number, since it uses as much as digits as its factorization.

148405321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 148405321 is about 12182.1722611364. The cubic root of 148405321 is about 529.4396843356.

The spelling of 148405321 in words is "one hundred forty-eight million, four hundred five thousand, three hundred twenty-one".