123948765 has 16 divisors (see below), whose sum is σ = 220353600. Its totient is φ = 66105936.

The previous prime is 123948763. The next prime is 123948809. The reversal of 123948765 is 567849321.

It is not a de Polignac number, because 123948765 - 2¹ = 123948763 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 123948765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123948763) 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 15 ways as a sum of consecutive naturals, for example, 458935 + ... + 459204.

It is an arithmetic number, because the mean of its divisors is an integer number (13772100).

Almost surely, 2^123948765 is an apocalyptic number.

123948765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123948765 is a deficient number, since it is larger than the sum of its proper divisors (96404835).

123948765 is an equidigital number, since it uses as much as digits as its factorization.

123948765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918153 (or 918147 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 123948765 is about 11133.2279685633. The cubic root of 123948765 is about 498.5944056451.

The spelling of 123948765 in words is "one hundred twenty-three million, nine hundred forty-eight thousand, seven hundred sixty-five".