285742073 has 2 divisors, whose sum is σ = 285742074. Its totient is φ = 285742072.

The previous prime is 285742057. The next prime is 285742081. The reversal of 285742073 is 370247582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164147344 + 121594729 = 12812^2 + 11027^2 .

It is a cyclic number.

It is not a de Polignac number, because 285742073 - 2⁴ = 285742057 is a prime.

It is not a weakly prime, because it can be changed into another prime (285742003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142871036 + 142871037.

It is an arithmetic number, because the mean of its divisors is an integer number (142871037).

Almost surely, 2^285742073 is an apocalyptic number.

It is an amenable number.

285742073 is a deficient number, since it is larger than the sum of its proper divisors (1).

285742073 is an equidigital number, since it uses as much as digits as its factorization.

285742073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 285742073 is about 16903.9070335825. The cubic root of 285742073 is about 658.6551072346.

The spelling of 285742073 in words is "two hundred eighty-five million, seven hundred forty-two thousand, seventy-three".