123742884 has 48 divisors (see below), whose sum is σ = 302843520. Its totient is φ = 39271680.

The previous prime is 123742873. The next prime is 123742889. The reversal of 123742884 is 488247321.

It is not an unprimeable number, because it can be changed into a prime (123742889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22969 + ... + 27839.

It is an arithmetic number, because the mean of its divisors is an integer number (6309240).

Almost surely, 2^123742884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123742884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151421760).

123742884 is an abundant number, since it is smaller than the sum of its proper divisors (179100636).

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

123742884 is a wasteful number, since it uses less digits than its factorization.

123742884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980 (or 4978 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 123742884 is about 11123.9778856307. The cubic root of 123742884 is about 498.3181947380.

The spelling of 123742884 in words is "one hundred twenty-three million, seven hundred forty-two thousand, eight hundred eighty-four".