146001209 has 2 divisors, whose sum is σ = 146001210. Its totient is φ = 146001208.

The previous prime is 146001197. The next prime is 146001269. The reversal of 146001209 is 902100641.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136235584 + 9765625 = 11672^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 146001209 - 2²⁴ = 129223993 is a prime.

It is not a weakly prime, because it can be changed into another prime (146001269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73000604 + 73000605.

It is an arithmetic number, because the mean of its divisors is an integer number (73000605).

Almost surely, 2^146001209 is an apocalyptic number.

It is an amenable number.

146001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

146001209 is an equidigital number, since it uses as much as digits as its factorization.

146001209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 146001209 is about 12083.0960022670. The cubic root of 146001209 is about 526.5651962733.

The spelling of 146001209 in words is "one hundred forty-six million, one thousand, two hundred nine".