4122355145 has 4 divisors (see below), whose sum is σ = 4946826180. Its totient is φ = 3297884112.

The previous prime is 4122355141. The next prime is 4122355157. The reversal of 4122355145 is 5415532214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5415532214 = 2 ⋅2707766107.

It can be written as a sum of positive squares in 2 ways, for example, as 1748326969 + 2374028176 = 41813^2 + 48724^2 .

It is a cyclic number.

It is not a de Polignac number, because 4122355145 - 2² = 4122355141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4122355141) 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, 412235510 + ... + 412235519.

It is an arithmetic number, because the mean of its divisors is an integer number (1236706545).

Almost surely, 2^4122355145 is an apocalyptic number.

It is an amenable number.

4122355145 is a deficient number, since it is larger than the sum of its proper divisors (824471035).

4122355145 is an equidigital number, since it uses as much as digits as its factorization.

4122355145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824471034.

The product of its digits is 24000, while the sum is 32.

The square root of 4122355145 is about 64205.5694235321. The cubic root of 4122355145 is about 1603.4243255236.

Adding to 4122355145 its reverse (5415532214), we get a palindrome (9537887359).

The spelling of 4122355145 in words is "four billion, one hundred twenty-two million, three hundred fifty-five thousand, one hundred forty-five".