123365445 has 48 divisors (see below), whose sum is σ = 235923072. Its totient is φ = 53919360.

The previous prime is 123365441. The next prime is 123365479. The reversal of 123365445 is 544563321.

It is not a de Polignac number, because 123365445 - 2² = 123365441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123365441) 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 47 ways as a sum of consecutive naturals, for example, 54435 + ... + 56655.

It is an arithmetic number, because the mean of its divisors is an integer number (4915064).

Almost surely, 2^123365445 is an apocalyptic number.

123365445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123365445 is a deficient number, since it is larger than the sum of its proper divisors (112557627).

123365445 is a wasteful number, since it uses less digits than its factorization.

123365445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282 (or 2259 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 123365445 is about 11106.9998199334. Note that the first 3 decimals coincide. The cubic root of 123365445 is about 497.8110240872.

The spelling of 123365445 in words is "one hundred twenty-three million, three hundred sixty-five thousand, four hundred forty-five".