190243 has 2 divisors, whose sum is σ = 190244. Its totient is φ = 190242.

The previous prime is 190207. The next prime is 190249. The reversal of 190243 is 342091.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190243 is a prime.

It is an Ulam number.

190243 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 190243.

It is not a weakly prime, because it can be changed into another prime (190249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95121 + 95122.

It is an arithmetic number, because the mean of its divisors is an integer number (95122).

2¹⁹⁰²⁴³ is an apocalyptic number.

190243 is a deficient number, since it is larger than the sum of its proper divisors (1).

190243 is an equidigital number, since it uses as much as digits as its factorization.

190243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 190243 is about 436.1685454042. The cubic root of 190243 is about 57.5134688045.

The spelling of 190243 in words is "one hundred ninety thousand, two hundred forty-three".