102438587 has 4 divisors (see below), whose sum is σ = 103881456. Its totient is φ = 100995720.

The previous prime is 102438577. The next prime is 102438613. The reversal of 102438587 is 785834201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102438587 - 2²⁰ = 101390011 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 102438587.

It is not an unprimeable number, because it can be changed into a prime (102438577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721328 + ... + 721469.

It is an arithmetic number, because the mean of its divisors is an integer number (25970364).

Almost surely, 2^102438587 is an apocalyptic number.

102438587 is a deficient number, since it is larger than the sum of its proper divisors (1442869).

102438587 is an equidigital number, since it uses as much as digits as its factorization.

102438587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442868.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 102438587 is about 10121.1949393340. The cubic root of 102438587 is about 467.9015958761.

The spelling of 102438587 in words is "one hundred two million, four hundred thirty-eight thousand, five hundred eighty-seven".