42111101 has 2 divisors, whose sum is σ = 42111102. Its totient is φ = 42111100.

The previous prime is 42111079. The next prime is 42111119. The reversal of 42111101 is 10111124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33051001 + 9060100 = 5749^2 + 3010^2 .

It is a cyclic number.

It is not a de Polignac number, because 42111101 - 2²² = 37916797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055550 + 21055551.

It is an arithmetic number, because the mean of its divisors is an integer number (21055551).

Almost surely, 2^42111101 is an apocalyptic number.

It is an amenable number.

42111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111101 is an equidigital number, since it uses as much as digits as its factorization.

42111101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 42111101 is about 6489.3066655845. The cubic root of 42111101 is about 347.9088946563.

Adding to 42111101 its reverse (10111124), we get a palindrome (52222225).

The spelling of 42111101 in words is "forty-two million, one hundred eleven thousand, one hundred one".