42273493 has 2 divisors, whose sum is σ = 42273494. Its totient is φ = 42273492.

The previous prime is 42273481. The next prime is 42273521. The reversal of 42273493 is 39437224.

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., 41692849 + 580644 = 6457^2 + 762^2 .

It is a cyclic number.

It is not a de Polignac number, because 42273493 - 2¹⁷ = 42142421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42273193) by changing a digit.

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 as a sum of consecutive naturals, namely, 21136746 + 21136747.

It is an arithmetic number, because the mean of its divisors is an integer number (21136747).

Almost surely, 2^42273493 is an apocalyptic number.

It is an amenable number.

42273493 is a deficient number, since it is larger than the sum of its proper divisors (1).

42273493 is an equidigital number, since it uses as much as digits as its factorization.

42273493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 42273493 is about 6501.8069027002. The cubic root of 42273493 is about 348.3555318581.

The spelling of 42273493 in words is "forty-two million, two hundred seventy-three thousand, four hundred ninety-three".