123354145 has 4 divisors (see below), whose sum is σ = 148024980. Its totient is φ = 98683312.

The previous prime is 123354131. The next prime is 123354149. The reversal of 123354145 is 541453321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66064384 + 57289761 = 8128^2 + 7569^2 .

It is a cyclic number.

It is not a de Polignac number, because 123354145 - 2¹³ = 123345953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123354149) 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 3 ways as a sum of consecutive naturals, for example, 12335410 + ... + 12335419.

It is an arithmetic number, because the mean of its divisors is an integer number (37006245).

Almost surely, 2^123354145 is an apocalyptic number.

It is an amenable number.

123354145 is a deficient number, since it is larger than the sum of its proper divisors (24670835).

123354145 is an equidigital number, since it uses as much as digits as its factorization.

123354145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24670834.

The product of its digits is 7200, while the sum is 28.

The square root of 123354145 is about 11106.4911200613. The cubic root of 123354145 is about 497.7958241628.

The spelling of 123354145 in words is "one hundred twenty-three million, three hundred fifty-four thousand, one hundred forty-five".