42159497 has 2 divisors, whose sum is σ = 42159498. Its totient is φ = 42159496.

The previous prime is 42159463. The next prime is 42159511. The reversal of 42159497 is 79495124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38987536 + 3171961 = 6244^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 42159497 - 2¹² = 42155401 is a prime.

It is not a weakly prime, because it can be changed into another prime (42159407) 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, 21079748 + 21079749.

It is an arithmetic number, because the mean of its divisors is an integer number (21079749).

Almost surely, 2^42159497 is an apocalyptic number.

It is an amenable number.

42159497 is a deficient number, since it is larger than the sum of its proper divisors (1).

42159497 is an equidigital number, since it uses as much as digits as its factorization.

42159497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 42159497 is about 6493.0344985992. The cubic root of 42159497 is about 348.0421212282.

The spelling of 42159497 in words is "forty-two million, one hundred fifty-nine thousand, four hundred ninety-seven".