42765061 has 2 divisors, whose sum is σ = 42765062. Its totient is φ = 42765060.

The previous prime is 42765059. The next prime is 42765077. The reversal of 42765061 is 16056724.

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., 39614436 + 3150625 = 6294^2 + 1775^2 .

It is a cyclic number.

It is not a de Polignac number, because 42765061 - 2¹ = 42765059 is a prime.

Together with 42765059, it forms a pair of twin primes.

It is the 6540-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42765001) by changing a digit.

It is a nontrivial repunit in base 6539.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21382530 + 21382531.

It is an arithmetic number, because the mean of its divisors is an integer number (21382531).

Almost surely, 2^42765061 is an apocalyptic number.

It is an amenable number.

42765061 is a deficient number, since it is larger than the sum of its proper divisors (1).

42765061 is an equidigital number, since it uses as much as digits as its factorization.

42765061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 42765061 is about 6539.5000573438. The cubic root of 42765061 is about 349.7005901995.

The spelling of 42765061 in words is "forty-two million, seven hundred sixty-five thousand, sixty-one".