42260081 has 2 divisors, whose sum is σ = 42260082. Its totient is φ = 42260080.

The previous prime is 42260077. The next prime is 42260093. The reversal of 42260081 is 18006224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29593600 + 12666481 = 5440^2 + 3559^2 .

It is a cyclic number.

It is not a de Polignac number, because 42260081 - 2² = 42260077 is a prime.

It is a super-2 number, since 2×42260081² = 3571828892253122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42260041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21130040 + 21130041.

It is an arithmetic number, because the mean of its divisors is an integer number (21130041).

Almost surely, 2^42260081 is an apocalyptic number.

It is an amenable number.

42260081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42260081 is an equidigital number, since it uses as much as digits as its factorization.

42260081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 42260081 is about 6500.7754152870. The cubic root of 42260081 is about 348.3186873467.

The spelling of 42260081 in words is "forty-two million, two hundred sixty thousand, eighty-one".