42520415111 has 2 divisors, whose sum is σ = 42520415112. Its totient is φ = 42520415110.

The previous prime is 42520415089. The next prime is 42520415117. The reversal of 42520415111 is 11151402524.

It is a happy number.

42520415111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42520415111 - 2¹⁴ = 42520398727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42520415117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21260207555 + 21260207556.

It is an arithmetic number, because the mean of its divisors is an integer number (21260207556).

Almost surely, 2^42520415111 is an apocalyptic number.

42520415111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42520415111 is an equidigital number, since it uses as much as digits as its factorization.

42520415111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 42520415111 its reverse (11151402524), we get a palindrome (53671817635).

The spelling of 42520415111 in words is "forty-two billion, five hundred twenty million, four hundred fifteen thousand, one hundred eleven".