123054649 has 3 divisors (see below), whose sum is σ = 123065743. Its totient is φ = 123043556.

The previous prime is 123054599. The next prime is 123054661. The reversal of 123054649 is 946450321.

It is a happy number.

The square root of 123054649 is 11093.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 102515625 + 20539024 = 10125^2 + 4532^2 .

It is not a de Polignac number, because 123054649 - 2¹³ = 123046457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123054049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5547 + ... + 16639.

Almost surely, 2^123054649 is an apocalyptic number.

123054649 is the 11093-rd square number.

123054649 is the 5547-th centered octagonal number.

It is an amenable number.

123054649 is a deficient number, since it is larger than the sum of its proper divisors (11094).

123054649 is an frugal number, since it uses more digits than its factorization.

123054649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186 (or 11093 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The cubic root of 123054649 is about 497.3926254977.

The spelling of 123054649 in words is "one hundred twenty-three million, fifty-four thousand, six hundred forty-nine".