146421673 has 2 divisors, whose sum is σ = 146421674. Its totient is φ = 146421672.

The previous prime is 146421659. The next prime is 146421683. The reversal of 146421673 is 376124641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146216464 + 205209 = 12092^2 + 453^2 .

It is an emirp because it is prime and its reverse (376124641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146421673 - 2⁵ = 146421641 is a prime.

It is not a weakly prime, because it can be changed into another prime (146421683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73210836 + 73210837.

It is an arithmetic number, because the mean of its divisors is an integer number (73210837).

Almost surely, 2^146421673 is an apocalyptic number.

It is an amenable number.

146421673 is a deficient number, since it is larger than the sum of its proper divisors (1).

146421673 is an equidigital number, since it uses as much as digits as its factorization.

146421673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 146421673 is about 12100.4823457580. The cubic root of 146421673 is about 527.0701909780.

The spelling of 146421673 in words is "one hundred forty-six million, four hundred twenty-one thousand, six hundred seventy-three".