120123545 has 8 divisors (see below), whose sum is σ = 144298824. Its totient is φ = 95998464.

The previous prime is 120123533. The next prime is 120123557. The reversal of 120123545 is 545321021.

It is an interprime number because it is at equal distance from previous prime (120123533) and next prime (120123557).

It can be written as a sum of positive squares in 4 ways, for example, as 47720464 + 72403081 = 6908^2 + 8509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120123545 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120123545.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7064 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (18037353).

Almost surely, 2^120123545 is an apocalyptic number.

It is an amenable number.

120123545 is a deficient number, since it is larger than the sum of its proper divisors (24175279).

120123545 is an equidigital number, since it uses as much as digits as its factorization.

120123545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25099.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 120123545 is about 10960.0887313926. The cubic root of 120123545 is about 493.4116280147.

Adding to 120123545 its reverse (545321021), we get a palindrome (665444566).

The spelling of 120123545 in words is "one hundred twenty million, one hundred twenty-three thousand, five hundred forty-five".