146721433 has 2 divisors, whose sum is σ = 146721434. Its totient is φ = 146721432.

The previous prime is 146721431. The next prime is 146721479. The reversal of 146721433 is 334127641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76965529 + 69755904 = 8773^2 + 8352^2 .

It is a cyclic number.

It is not a de Polignac number, because 146721433 - 2¹ = 146721431 is a prime.

Together with 146721431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 146721395 and 146721404.

It is not a weakly prime, because it can be changed into another prime (146721431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73360716 + 73360717.

It is an arithmetic number, because the mean of its divisors is an integer number (73360717).

Almost surely, 2^146721433 is an apocalyptic number.

It is an amenable number.

146721433 is a deficient number, since it is larger than the sum of its proper divisors (1).

146721433 is an equidigital number, since it uses as much as digits as its factorization.

146721433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 146721433 is about 12112.8622959233. The cubic root of 146721433 is about 527.4296251660.

The spelling of 146721433 in words is "one hundred forty-six million, seven hundred twenty-one thousand, four hundred thirty-three".