123050945 has 4 divisors (see below), whose sum is σ = 147661140. Its totient is φ = 98440752.

The previous prime is 123050933. The next prime is 123050951. The reversal of 123050945 is 549050321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549050321 = 22859 ⋅24019.

It can be written as a sum of positive squares in 2 ways, for example, as 75881521 + 47169424 = 8711^2 + 6868^2 .

It is a cyclic number.

It is not a de Polignac number, because 123050945 - 2⁴ = 123050929 is a prime.

It is an alternating number because its digits alternate between odd and even.

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, 12305090 + ... + 12305099.

It is an arithmetic number, because the mean of its divisors is an integer number (36915285).

Almost surely, 2^123050945 is an apocalyptic number.

It is an amenable number.

123050945 is a deficient number, since it is larger than the sum of its proper divisors (24610195).

123050945 is an equidigital number, since it uses as much as digits as its factorization.

123050945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24610194.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 123050945 is about 11092.8330466117. The cubic root of 123050945 is about 497.3876348674.

The spelling of 123050945 in words is "one hundred twenty-three million, fifty thousand, nine hundred forty-five".