123248556 has 18 divisors (see below), whose sum is σ = 311545052. Its totient is φ = 41082840.

The previous prime is 123248551. The next prime is 123248557. The reversal of 123248556 is 655842321.

123248556 = T₃₀₀₈ + T₃₀₀₉ + ... + T₃₀₃₄.

123248556 is a `hidden beast` number, since 123 + 2 + 485 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3423571 = 123248556 / (1 + 2 + 3 + 2 + 4 + 8 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 123248556.

It is not an unprimeable number, because it can be changed into a prime (123248551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1711750 + ... + 1711821.

Almost surely, 2^123248556 is an apocalyptic number.

It is an amenable number.

123248556 is an abundant number, since it is smaller than the sum of its proper divisors (188296496).

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

123248556 is a wasteful number, since it uses less digits than its factorization.

123248556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423581 (or 3423576 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 123248556 is about 11101.7366209076. The cubic root of 123248556 is about 497.6537487648.

The spelling of 123248556 in words is "one hundred twenty-three million, two hundred forty-eight thousand, five hundred fifty-six".