42250111 has 4 divisors (see below), whose sum is σ = 42263224. Its totient is φ = 42237000.

The previous prime is 42250097. The next prime is 42250147. The reversal of 42250111 is 11105224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42250111 - 2¹³ = 42241919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42250171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1996 + ... + 9406.

It is an arithmetic number, because the mean of its divisors is an integer number (10565806).

Almost surely, 2^42250111 is an apocalyptic number.

42250111 is a deficient number, since it is larger than the sum of its proper divisors (13113).

42250111 is an equidigital number, since it uses as much as digits as its factorization.

42250111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13112.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 42250111 is about 6500.0085384559. The cubic root of 42250111 is about 348.2912934061.

Adding to 42250111 its reverse (11105224), we get a palindrome (53355335).

The spelling of 42250111 in words is "forty-two million, two hundred fifty thousand, one hundred eleven".