42120342022205 has 4 divisors (see below), whose sum is σ = 50544410426652. Its totient is φ = 33696273617760.

The previous prime is 42120342022169. The next prime is 42120342022237. The reversal of 42120342022205 is 50222024302124.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33479346665956 + 8640995356249 = 5786134^2 + 2939557^2 .

It is not a de Polignac number, because 42120342022205 - 2⁴⁴ = 24528155977789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4212034202216 + ... + 4212034202225.

It is an arithmetic number, because the mean of its divisors is an integer number (12636102606663).

Almost surely, 2^{42120342022205} is an apocalyptic number.

It is an amenable number.

42120342022205 is a deficient number, since it is larger than the sum of its proper divisors (8424068404447).

42120342022205 is an equidigital number, since it uses as much as digits as its factorization.

42120342022205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424068404446.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 42120342022205 its reverse (50222024302124), we get a palindrome (92342366324329).

The spelling of 42120342022205 in words is "forty-two trillion, one hundred twenty billion, three hundred forty-two million, twenty-two thousand, two hundred five".