146149021 has 2 divisors, whose sum is σ = 146149022. Its totient is φ = 146149020.

The previous prime is 146149013. The next prime is 146149039. The reversal of 146149021 is 120941641.

146149021 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., 145805625 + 343396 = 12075^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 146149021 - 2³ = 146149013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146147021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73074510 + 73074511.

It is an arithmetic number, because the mean of its divisors is an integer number (73074511).

Almost surely, 2^146149021 is an apocalyptic number.

It is an amenable number.

146149021 is a deficient number, since it is larger than the sum of its proper divisors (1).

146149021 is an equidigital number, since it uses as much as digits as its factorization.

146149021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 146149021 is about 12089.2109337210. The cubic root of 146149021 is about 526.7428349931.

The spelling of 146149021 in words is "one hundred forty-six million, one hundred forty-nine thousand, twenty-one".