42479530081 has 2 divisors, whose sum is σ = 42479530082. Its totient is φ = 42479530080.

The previous prime is 42479530069. The next prime is 42479530123. The reversal of 42479530081 is 18003597424.

42479530081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38510530081 + 3969000000 = 196241^2 + 63000^2 .

It is a cyclic number.

It is not a de Polignac number, because 42479530081 - 2²³ = 42471141473 is a prime.

It is a super-2 number, since 2×42479530081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42479930081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21239765040 + 21239765041.

It is an arithmetic number, because the mean of its divisors is an integer number (21239765041).

Almost surely, 2^42479530081 is an apocalyptic number.

It is an amenable number.

42479530081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42479530081 is an equidigital number, since it uses as much as digits as its factorization.

42479530081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 42479530081 in words is "forty-two billion, four hundred seventy-nine million, five hundred thirty thousand, eighty-one".