42497293 has 2 divisors, whose sum is σ = 42497294. Its totient is φ = 42497292.

The previous prime is 42497269. The next prime is 42497303. The reversal of 42497293 is 39279424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39664804 + 2832489 = 6298^2 + 1683^2 .

It is a cyclic number.

It is not a de Polignac number, because 42497293 - 2²¹ = 40400141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42497393) 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, 21248646 + 21248647.

It is an arithmetic number, because the mean of its divisors is an integer number (21248647).

Almost surely, 2^42497293 is an apocalyptic number.

It is an amenable number.

42497293 is a deficient number, since it is larger than the sum of its proper divisors (1).

42497293 is an equidigital number, since it uses as much as digits as its factorization.

42497293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 42497293 is about 6518.9947844741. The cubic root of 42497293 is about 348.9691929359.

The spelling of 42497293 in words is "forty-two million, four hundred ninety-seven thousand, two hundred ninety-three".