123247984 has 40 divisors (see below), whose sum is σ = 262304640. Its totient is φ = 55839168.

The previous prime is 123247981. The next prime is 123247987. The reversal of 123247984 is 489742321.

It is an interprime number because it is at equal distance from previous prime (123247981) and next prime (123247987).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123247981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822 + ... + 15805.

It is an arithmetic number, because the mean of its divisors is an integer number (6557616).

Almost surely, 2^123247984 is an apocalyptic number.

It is an amenable number.

123247984 is an abundant number, since it is smaller than the sum of its proper divisors (139056656).

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

123247984 is a wasteful number, since it uses less digits than its factorization.

123247984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17677 (or 17671 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 123247984 is about 11101.7108591424. The cubic root of 123247984 is about 497.6529788886.

The spelling of 123247984 in words is "one hundred twenty-three million, two hundred forty-seven thousand, nine hundred eighty-four".