146046721 has 2 divisors, whose sum is σ = 146046722. Its totient is φ = 146046720.

The previous prime is 146046713. The next prime is 146046727. The reversal of 146046721 is 127640641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129072321 + 16974400 = 11361^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 146046721 - 2³ = 146046713 is a prime.

It is not a weakly prime, because it can be changed into another prime (146046727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73023360 + 73023361.

It is an arithmetic number, because the mean of its divisors is an integer number (73023361).

Almost surely, 2^146046721 is an apocalyptic number.

It is an amenable number.

146046721 is a deficient number, since it is larger than the sum of its proper divisors (1).

146046721 is an equidigital number, since it uses as much as digits as its factorization.

146046721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 146046721 is about 12084.9791476858. The cubic root of 146046721 is about 526.6199048283.

The spelling of 146046721 in words is "one hundred forty-six million, forty-six thousand, seven hundred twenty-one".