42152111 has 2 divisors, whose sum is σ = 42152112. Its totient is φ = 42152110.

The previous prime is 42152107. The next prime is 42152147. The reversal of 42152111 is 11125124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42152111 - 2² = 42152107 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42152111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42152161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21076055 + 21076056.

It is an arithmetic number, because the mean of its divisors is an integer number (21076056).

Almost surely, 2^42152111 is an apocalyptic number.

42152111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42152111 is an equidigital number, since it uses as much as digits as its factorization.

42152111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 17.

The square root of 42152111 is about 6492.4657103446. The cubic root of 42152111 is about 348.0217953276.

Adding to 42152111 its reverse (11125124), we get a palindrome (53277235).

The spelling of 42152111 in words is "forty-two million, one hundred fifty-two thousand, one hundred eleven".