42205421111 has 4 divisors (see below), whose sum is σ = 48234766992. Its totient is φ = 36176075232.

The previous prime is 42205421053. The next prime is 42205421117. The reversal of 42205421111 is 11112450224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42205421111 - 2¹⁸ = 42205158967 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 (42205421117) 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, 3014672930 + ... + 3014672943.

It is an arithmetic number, because the mean of its divisors is an integer number (12058691748).

Almost surely, 2^42205421111 is an apocalyptic number.

42205421111 is a deficient number, since it is larger than the sum of its proper divisors (6029345881).

42205421111 is an equidigital number, since it uses as much as digits as its factorization.

42205421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6029345880.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 42205421111 its reverse (11112450224), we get a palindrome (53317871335).

The spelling of 42205421111 in words is "forty-two billion, two hundred five million, four hundred twenty-one thousand, one hundred eleven".