123487847 has 16 divisors (see below), whose sum is σ = 152616960. Its totient is φ = 97496448.

The previous prime is 123487843. The next prime is 123487867. The reversal of 123487847 is 748784321.

It is not a de Polignac number, because 123487847 - 2² = 123487843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123487798 and 123487807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123487841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5447 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (9538560).

Almost surely, 2^123487847 is an apocalyptic number.

123487847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

123487847 is a deficient number, since it is larger than the sum of its proper divisors (29129113).

123487847 is a wasteful number, since it uses less digits than its factorization.

123487847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22150.

The product of its digits is 301056, while the sum is 44.

The square root of 123487847 is about 11112.5085826739. The cubic root of 123487847 is about 497.9756107581.

The spelling of 123487847 in words is "one hundred twenty-three million, four hundred eighty-seven thousand, eight hundred forty-seven".