42136597 has 2 divisors, whose sum is σ = 42136598. Its totient is φ = 42136596.

The previous prime is 42136573. The next prime is 42136607. The reversal of 42136597 is 79563124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32364721 + 9771876 = 5689^2 + 3126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42136597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42136697) 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, 21068298 + 21068299.

It is an arithmetic number, because the mean of its divisors is an integer number (21068299).

Almost surely, 2^42136597 is an apocalyptic number.

It is an amenable number.

42136597 is a deficient number, since it is larger than the sum of its proper divisors (1).

42136597 is an equidigital number, since it uses as much as digits as its factorization.

42136597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 42136597 is about 6491.2708308928. The cubic root of 42136597 is about 347.9790938469.

The spelling of 42136597 in words is "forty-two million, one hundred thirty-six thousand, five hundred ninety-seven".