123039587 has 8 divisors (see below), whose sum is σ = 134372352. Its totient is φ = 111731400.

The previous prime is 123039583. The next prime is 123039593. The reversal of 123039587 is 785930321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123039587 - 2² = 123039583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123039587.

It is not an unprimeable number, because it can be changed into a prime (123039583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5258 + ... + 16544.

It is an arithmetic number, because the mean of its divisors is an integer number (16796544).

Almost surely, 2^123039587 is an apocalyptic number.

123039587 is a deficient number, since it is larger than the sum of its proper divisors (11332765).

123039587 is a wasteful number, since it uses less digits than its factorization.

123039587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12289.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 123039587 is about 11092.3210826229. The cubic root of 123039587 is about 497.3723309010.

The spelling of 123039587 in words is "one hundred twenty-three million, thirty-nine thousand, five hundred eighty-seven".