42713081 has 2 divisors, whose sum is σ = 42713082. Its totient is φ = 42713080.

The previous prime is 42713057. The next prime is 42713107. The reversal of 42713081 is 18031724.

It is an a-pointer prime, because the next prime (42713107) can be obtained adding 42713081 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41538025 + 1175056 = 6445^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 42713081 - 2⁶ = 42713017 is a prime.

It is a super-2 number, since 2×42713081² = 3648814577025122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42713081.

It is not a weakly prime, because it can be changed into another prime (42713981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21356540 + 21356541.

It is an arithmetic number, because the mean of its divisors is an integer number (21356541).

Almost surely, 2^42713081 is an apocalyptic number.

It is an amenable number.

42713081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42713081 is an equidigital number, since it uses as much as digits as its factorization.

42713081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 42713081 is about 6535.5245390099. The cubic root of 42713081 is about 349.5588482728.

The spelling of 42713081 in words is "forty-two million, seven hundred thirteen thousand, eighty-one".