146382421 has 2 divisors, whose sum is σ = 146382422. Its totient is φ = 146382420.

The previous prime is 146382391. The next prime is 146382451. The reversal of 146382421 is 124283641.

It is a balanced prime because it is at equal distance from previous prime (146382391) and next prime (146382451).

It can be written as a sum of positive squares in only one way, i.e., 144720900 + 1661521 = 12030^2 + 1289^2 .

It is an emirp because it is prime and its reverse (124283641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146382421 - 2¹⁹ = 145858133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146382451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73191210 + 73191211.

It is an arithmetic number, because the mean of its divisors is an integer number (73191211).

Almost surely, 2^146382421 is an apocalyptic number.

It is an amenable number.

146382421 is a deficient number, since it is larger than the sum of its proper divisors (1).

146382421 is an equidigital number, since it uses as much as digits as its factorization.

146382421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 146382421 is about 12098.8603182283. The cubic root of 146382421 is about 527.0230886430.

The spelling of 146382421 in words is "one hundred forty-six million, three hundred eighty-two thousand, four hundred twenty-one".