423104221145 has 4 divisors (see below), whose sum is σ = 507725065380. Its totient is φ = 338483376912.

The previous prime is 423104221121. The next prime is 423104221151. The reversal of 423104221145 is 541122401324.

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 178002985216 + 245101235929 = 421904^2 + 495077^2 .

It is a cyclic number.

It is not a de Polignac number, because 423104221145 - 2¹² = 423104217049 is a prime.

It is a super-2 number, since 2×423104221145² (a number of 24 digits) contains 22 as substring.

It is a Curzon 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, 42310422110 + ... + 42310422119.

It is an arithmetic number, because the mean of its divisors is an integer number (126931266345).

Almost surely, 2^423104221145 is an apocalyptic number.

It is an amenable number.

423104221145 is a deficient number, since it is larger than the sum of its proper divisors (84620844235).

423104221145 is an equidigital number, since it uses as much as digits as its factorization.

423104221145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84620844234.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 423104221145 its reverse (541122401324), we get a palindrome (964226622469).

The spelling of 423104221145 in words is "four hundred twenty-three billion, one hundred four million, two hundred twenty-one thousand, one hundred forty-five".