245920123 has 8 divisors (see below), whose sum is σ = 249562880. Its totient is φ = 242300160.

The previous prime is 245920099. The next prime is 245920141. The reversal of 245920123 is 321029542.

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 245920123 - 2¹³ = 245911931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245920091 and 245920100.

It is not an unprimeable number, because it can be changed into a prime (245920523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16678 + ... + 27748.

It is an arithmetic number, because the mean of its divisors is an integer number (31195360).

Almost surely, 2^245920123 is an apocalyptic number.

245920123 is a deficient number, since it is larger than the sum of its proper divisors (3642757).

245920123 is a wasteful number, since it uses less digits than its factorization.

245920123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11397.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 245920123 is about 15681.8405488642. The cubic root of 245920123 is about 626.5148304556.

Adding to 245920123 its reverse (321029542), we get a palindrome (566949665).

The spelling of 245920123 in words is "two hundred forty-five million, nine hundred twenty thousand, one hundred twenty-three".