148043821 has 4 divisors (see below), whose sum is σ = 148071132. Its totient is φ = 148016512.

The previous prime is 148043813. The next prime is 148043849. The reversal of 148043821 is 128340841.

148043821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 128340841 = 6547 ⋅19603.

It can be written as a sum of positive squares in 2 ways, for example, as 33767721 + 114276100 = 5811^2 + 10690^2 .

It is a cyclic number.

It is not a de Polignac number, because 148043821 - 2³ = 148043813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148043891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2470 + ... + 17383.

It is an arithmetic number, because the mean of its divisors is an integer number (37017783).

Almost surely, 2^148043821 is an apocalyptic number.

It is an amenable number.

148043821 is a deficient number, since it is larger than the sum of its proper divisors (27311).

148043821 is an equidigital number, since it uses as much as digits as its factorization.

148043821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27310.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 148043821 is about 12167.3259593059. The cubic root of 148043821 is about 529.0094480536.

The spelling of 148043821 in words is "one hundred forty-eight million, forty-three thousand, eight hundred twenty-one".