290002145 has 4 divisors (see below), whose sum is σ = 348002580. Its totient is φ = 232001712.

The previous prime is 290002129. The next prime is 290002151. The reversal of 290002145 is 541200092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57866449 + 232135696 = 7607^2 + 15236^2 .

It is a cyclic number.

It is not a de Polignac number, because 290002145 - 2⁴ = 290002129 is a prime.

290002145 is a modest number, since divided by 2145 gives 290 as remainder.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 290002145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29000210 + ... + 29000219.

It is an arithmetic number, because the mean of its divisors is an integer number (87000645).

Almost surely, 2^290002145 is an apocalyptic number.

It is an amenable number.

290002145 is a deficient number, since it is larger than the sum of its proper divisors (58000435).

290002145 is an equidigital number, since it uses as much as digits as its factorization.

290002145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58000434.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 290002145 is about 17029.4493451785. The cubic root of 290002145 is about 661.9122267506.

The spelling of 290002145 in words is "two hundred ninety million, two thousand, one hundred forty-five".