42130111 has 2 divisors, whose sum is σ = 42130112. Its totient is φ = 42130110.

The previous prime is 42130079. The next prime is 42130117. The reversal of 42130111 is 11103124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42130111 - 2⁵ = 42130079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42130091 and 42130100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42130117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065055 + 21065056.

It is an arithmetic number, because the mean of its divisors is an integer number (21065056).

Almost surely, 2^42130111 is an apocalyptic number.

42130111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42130111 is an equidigital number, since it uses as much as digits as its factorization.

42130111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 42130111 is about 6490.7712176597. The cubic root of 42130111 is about 347.9612383612.

Adding to 42130111 its reverse (11103124), we get a palindrome (53233235).

The spelling of 42130111 in words is "forty-two million, one hundred thirty thousand, one hundred eleven".