123487506 has 48 divisors (see below), whose sum is σ = 280215936. Its totient is φ = 39228288.

The previous prime is 123487501. The next prime is 123487513. The reversal of 123487506 is 605784321.

123487506 is a `hidden beast` number, since 123 + 487 + 50 + 6 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123487501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207946 + ... + 208538.

It is an arithmetic number, because the mean of its divisors is an integer number (5837832).

Almost surely, 2^123487506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123487506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140107968).

123487506 is an abundant number, since it is smaller than the sum of its proper divisors (156728430).

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

123487506 is a wasteful number, since it uses less digits than its factorization.

123487506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 123487506 is about 11112.4932395930. The cubic root of 123487506 is about 497.9751523868.

The spelling of 123487506 in words is "one hundred twenty-three million, four hundred eighty-seven thousand, five hundred six".