42220343401 has 4 divisors (see below), whose sum is σ = 42283078612. Its totient is φ = 42157608192.

The previous prime is 42220343383. The next prime is 42220343447. The reversal of 42220343401 is 10434302224.

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 16326706176 + 25893637225 = 127776^2 + 160915^2 .

It is a cyclic number.

It is not a de Polignac number, because 42220343401 - 2²¹ = 42218246249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42220343491) 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, 31366596 + ... + 31367941.

It is an arithmetic number, because the mean of its divisors is an integer number (10570769653).

Almost surely, 2^42220343401 is an apocalyptic number.

It is an amenable number.

42220343401 is a deficient number, since it is larger than the sum of its proper divisors (62735211).

42220343401 is an equidigital number, since it uses as much as digits as its factorization.

42220343401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62735210.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42220343401 its reverse (10434302224), we get a palindrome (52654645625).

The spelling of 42220343401 in words is "forty-two billion, two hundred twenty million, three hundred forty-three thousand, four hundred one".