123009485 has 4 divisors (see below), whose sum is σ = 147611388. Its totient is φ = 98407584.

The previous prime is 123009463. The next prime is 123009487. The reversal of 123009485 is 584900321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584900321 = 641 ⋅912481.

It can be written as a sum of positive squares in 2 ways, for example, as 76073284 + 46936201 = 8722^2 + 6851^2 .

It is a cyclic number.

It is not a de Polignac number, because 123009485 - 2⁶ = 123009421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123009487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12300944 + ... + 12300953.

It is an arithmetic number, because the mean of its divisors is an integer number (36902847).

Almost surely, 2^123009485 is an apocalyptic number.

It is an amenable number.

123009485 is a deficient number, since it is larger than the sum of its proper divisors (24601903).

123009485 is an equidigital number, since it uses as much as digits as its factorization.

123009485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24601902.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 123009485 is about 11090.9641149902. The cubic root of 123009485 is about 497.3317663873.

The spelling of 123009485 in words is "one hundred twenty-three million, nine thousand, four hundred eighty-five".