123145260 has 96 divisors (see below), whose sum is σ = 398103552. Its totient is φ = 27859200.

The previous prime is 123145259. The next prime is 123145261. The reversal of 123145260 is 62541321.

It is an interprime number because it is at equal distance from previous prime (123145259) and next prime (123145261).

It is a self number, because there is not a number n which added to its sum of digits gives 123145260.

It is not an unprimeable number, because it can be changed into a prime (123145261) 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 31 ways as a sum of consecutive naturals, for example, 40969 + ... + 43871.

It is an arithmetic number, because the mean of its divisors is an integer number (4146912).

Almost surely, 2^123145260 is an apocalyptic number.

123145260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123145260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199051776).

123145260 is an abundant number, since it is smaller than the sum of its proper divisors (274958292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123145260 is a wasteful number, since it uses less digits than its factorization.

123145260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023 (or 3021 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 123145260 is about 11097.0834006058. The cubic root of 123145260 is about 497.5146801725.

Adding to 123145260 its reverse (62541321), we get a palindrome (185686581).

The spelling of 123145260 in words is "one hundred twenty-three million, one hundred forty-five thousand, two hundred sixty".