148203821 has 2 divisors, whose sum is σ = 148203822. Its totient is φ = 148203820.

The previous prime is 148203817. The next prime is 148203827. The reversal of 148203821 is 128302841.

148203821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116337796 + 31866025 = 10786^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 148203821 - 2² = 148203817 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148203827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74101910 + 74101911.

It is an arithmetic number, because the mean of its divisors is an integer number (74101911).

Almost surely, 2^148203821 is an apocalyptic number.

It is an amenable number.

148203821 is a deficient number, since it is larger than the sum of its proper divisors (1).

148203821 is an equidigital number, since it uses as much as digits as its factorization.

148203821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 148203821 is about 12173.8991699455. The cubic root of 148203821 is about 529.1999570462.

The spelling of 148203821 in words is "one hundred forty-eight million, two hundred three thousand, eight hundred twenty-one".