245122123 has 8 divisors (see below), whose sum is σ = 254192400. Its totient is φ = 236093088.

The previous prime is 245122117. The next prime is 245122139. The reversal of 245122123 is 321221542.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245122123 - 2¹⁷ = 244991051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245122094 and 245122103.

It is not an unprimeable number, because it can be changed into a prime (245122183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2065 + ... + 22237.

It is an arithmetic number, because the mean of its divisors is an integer number (31774050).

Almost surely, 2^245122123 is an apocalyptic number.

245122123 is a deficient number, since it is larger than the sum of its proper divisors (9070277).

245122123 is a wasteful number, since it uses less digits than its factorization.

245122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20621.

The product of its digits is 960, while the sum is 22.

The square root of 245122123 is about 15656.3764326232. The cubic root of 245122123 is about 625.8364250896.

Adding to 245122123 its reverse (321221542), we get a palindrome (566343665).

The spelling of 245122123 in words is "two hundred forty-five million, one hundred twenty-two thousand, one hundred twenty-three".