42608513 has 2 divisors, whose sum is σ = 42608514. Its totient is φ = 42608512.

The previous prime is 42608509. The next prime is 42608519. The reversal of 42608513 is 31580624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26863489 + 15745024 = 5183^2 + 3968^2 .

It is a cyclic number.

It is not a de Polignac number, because 42608513 - 2² = 42608509 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42608519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21304256 + 21304257.

It is an arithmetic number, because the mean of its divisors is an integer number (21304257).

Almost surely, 2^42608513 is an apocalyptic number.

It is an amenable number.

42608513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42608513 is an equidigital number, since it uses as much as digits as its factorization.

42608513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 42608513 is about 6527.5196667647. The cubic root of 42608513 is about 349.2733577531.

The spelling of 42608513 in words is "forty-two million, six hundred eight thousand, five hundred thirteen".