123130565 has 8 divisors (see below), whose sum is σ = 148420608. Its totient is φ = 98061840.

The previous prime is 123130537. The next prime is 123130573. The reversal of 123130565 is 565031321.

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

It is not a de Polignac number, because 123130565 - 2¹⁰ = 123129541 is a prime.

It is a super-2 number, since 2×123130565² = 30322272074438450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54101 + ... + 56330.

It is an arithmetic number, because the mean of its divisors is an integer number (18552576).

Almost surely, 2^123130565 is an apocalyptic number.

It is an amenable number.

123130565 is a deficient number, since it is larger than the sum of its proper divisors (25290043).

123130565 is a wasteful number, since it uses less digits than its factorization.

123130565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110659.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 123130565 is about 11096.4212699410. The cubic root of 123130565 is about 497.4948898072.

Adding to 123130565 its reverse (565031321), we get a palindrome (688161886).

The spelling of 123130565 in words is "one hundred twenty-three million, one hundred thirty thousand, five hundred sixty-five".