42111077 has 2 divisors, whose sum is σ = 42111078. Its totient is φ = 42111076.

The previous prime is 42111071. The next prime is 42111079. The reversal of 42111077 is 77011124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35628961 + 6482116 = 5969^2 + 2546^2 .

It is a cyclic number.

It is not a de Polignac number, because 42111077 - 2¹⁰ = 42110053 is a prime.

Together with 42111079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055538 + 21055539.

It is an arithmetic number, because the mean of its divisors is an integer number (21055539).

Almost surely, 2^42111077 is an apocalyptic number.

It is an amenable number.

42111077 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111077 is an equidigital number, since it uses as much as digits as its factorization.

42111077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 42111077 is about 6489.3048163883. The cubic root of 42111077 is about 347.9088285627.

The spelling of 42111077 in words is "forty-two million, one hundred eleven thousand, seventy-seven".