42501497 has 2 divisors, whose sum is σ = 42501498. Its totient is φ = 42501496.

The previous prime is 42501491. The next prime is 42501521. The reversal of 42501497 is 79410524.

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., 38887696 + 3613801 = 6236^2 + 1901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42501497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42501491) 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, 21250748 + 21250749.

It is an arithmetic number, because the mean of its divisors is an integer number (21250749).

Almost surely, 2^42501497 is an apocalyptic number.

It is an amenable number.

42501497 is a deficient number, since it is larger than the sum of its proper divisors (1).

42501497 is an equidigital number, since it uses as much as digits as its factorization.

42501497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 42501497 is about 6519.3172188505. The cubic root of 42501497 is about 348.9806996932.

The spelling of 42501497 in words is "forty-two million, five hundred one thousand, four hundred ninety-seven".