42299497 has 2 divisors, whose sum is σ = 42299498. Its totient is φ = 42299496.

The previous prime is 42299449. The next prime is 42299501. The reversal of 42299497 is 79499224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23193856 + 19105641 = 4816^2 + 4371^2 .

It is a cyclic number.

It is not a de Polignac number, because 42299497 - 2¹⁵ = 42266729 is a prime.

It is not a weakly prime, because it can be changed into another prime (42299437) 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, 21149748 + 21149749.

It is an arithmetic number, because the mean of its divisors is an integer number (21149749).

Almost surely, 2^42299497 is an apocalyptic number.

It is an amenable number.

42299497 is a deficient number, since it is larger than the sum of its proper divisors (1).

42299497 is an equidigital number, since it uses as much as digits as its factorization.

42299497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 42299497 is about 6503.8063470555. The cubic root of 42299497 is about 348.4269460376.

The spelling of 42299497 in words is "forty-two million, two hundred ninety-nine thousand, four hundred ninety-seven".