148021 has 2 divisors, whose sum is σ = 148022. Its totient is φ = 148020.

The previous prime is 148013. The next prime is 148061. The reversal of 148021 is 120841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 7396 = 375^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 148021 - 2³ = 148013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 147986 and 148004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74010 + 74011.

It is an arithmetic number, because the mean of its divisors is an integer number (74011).

2¹⁴⁸⁰²¹ is an apocalyptic number.

It is an amenable number.

148021 is a deficient number, since it is larger than the sum of its proper divisors (1).

148021 is an equidigital number, since it uses as much as digits as its factorization.

148021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 148021 is about 384.7349737157. The cubic root of 148021 is about 52.8982264334.

Adding to 148021 its reverse (120841), we get a palindrome (268862).

The spelling of 148021 in words is "one hundred forty-eight thousand, twenty-one".