423625200121 has 4 divisors (see below), whose sum is σ = 435074529892. Its totient is φ = 412175870352.

The previous prime is 423625200079. The next prime is 423625200133. The reversal of 423625200121 is 121002526324.

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 314537018896 + 109088181225 = 560836^2 + 330285^2 .

It is a cyclic number.

It is not a de Polignac number, because 423625200121 - 2⁹ = 423625199609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423625200121.

It is not an unprimeable number, because it can be changed into a prime (423625200221) 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, 5724664830 + ... + 5724664903.

It is an arithmetic number, because the mean of its divisors is an integer number (108768632473).

Almost surely, 2^423625200121 is an apocalyptic number.

It is an amenable number.

423625200121 is a deficient number, since it is larger than the sum of its proper divisors (11449329771).

423625200121 is a wasteful number, since it uses less digits than its factorization.

423625200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449329770.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 423625200121 its reverse (121002526324), we get a palindrome (544627726445).

The spelling of 423625200121 in words is "four hundred twenty-three billion, six hundred twenty-five million, two hundred thousand, one hundred twenty-one".