123248538 has 96 divisors (see below), whose sum is σ = 326042496. Its totient is φ = 32845824.

The previous prime is 123248533. The next prime is 123248549. The reversal of 123248538 is 835842321.

It is not an unprimeable number, because it can be changed into a prime (123248533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 348970 + ... + 349322.

It is an arithmetic number, because the mean of its divisors is an integer number (3396276).

Almost surely, 2^123248538 is an apocalyptic number.

123248538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123248538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163021248).

123248538 is an abundant number, since it is smaller than the sum of its proper divisors (202793958).

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

123248538 is a wasteful number, since it uses less digits than its factorization.

123248538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 545 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 123248538 is about 11101.7358102236. The cubic root of 123248538 is about 497.6537245379.

It can be divided in two parts, 1232 and 48538, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 123248538 in words is "one hundred twenty-three million, two hundred forty-eight thousand, five hundred thirty-eight".