42089273 has 2 divisors, whose sum is σ = 42089274. Its totient is φ = 42089272.

The previous prime is 42089269. The next prime is 42089279. The reversal of 42089273 is 37298024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38278969 + 3810304 = 6187^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 42089273 - 2² = 42089269 is a prime.

It is equal to p_2552696 and since 42089273 and 2552696 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42089279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21044636 + 21044637.

It is an arithmetic number, because the mean of its divisors is an integer number (21044637).

Almost surely, 2^42089273 is an apocalyptic number.

It is an amenable number.

42089273 is a deficient number, since it is larger than the sum of its proper divisors (1).

42089273 is an equidigital number, since it uses as much as digits as its factorization.

42089273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 42089273 is about 6487.6246038130. The cubic root of 42089273 is about 347.8487722050.

The spelling of 42089273 in words is "forty-two million, eighty-nine thousand, two hundred seventy-three".