123787587 has 48 divisors (see below), whose sum is σ = 215324928. Its totient is φ = 61448640.

The previous prime is 123787571. The next prime is 123787621. The reversal of 123787587 is 785787321.

It is not a de Polignac number, because 123787587 - 2⁴ = 123787571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123787507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121693 + ... + 122705.

It is an arithmetic number, because the mean of its divisors is an integer number (4485936).

Almost surely, 2^123787587 is an apocalyptic number.

123787587 is a deficient number, since it is larger than the sum of its proper divisors (91537341).

123787587 is a wasteful number, since it uses less digits than its factorization.

123787587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1057 counting only the distinct ones).

The product of its digits is 658560, while the sum is 48.

The square root of 123787587 is about 11125.9870123958. The cubic root of 123787587 is about 498.3781945149.

The spelling of 123787587 in words is "one hundred twenty-three million, seven hundred eighty-seven thousand, five hundred eighty-seven".