146199821 has 2 divisors, whose sum is σ = 146199822. Its totient is φ = 146199820.

The previous prime is 146199803. The next prime is 146199841. The reversal of 146199821 is 128991641.

146199821 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., 103754596 + 42445225 = 10186^2 + 6515^2 .

It is a cyclic number.

It is not a de Polignac number, because 146199821 - 2¹⁰ = 146198797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146199841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73099910 + 73099911.

It is an arithmetic number, because the mean of its divisors is an integer number (73099911).

Almost surely, 2^146199821 is an apocalyptic number.

It is an amenable number.

146199821 is a deficient number, since it is larger than the sum of its proper divisors (1).

146199821 is an equidigital number, since it uses as much as digits as its factorization.

146199821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 41.

The square root of 146199821 is about 12091.3117981466. The cubic root of 146199821 is about 526.8038581782.

The spelling of 146199821 in words is "one hundred forty-six million, one hundred ninety-nine thousand, eight hundred twenty-one".