102124387 has 4 divisors (see below), whose sum is σ = 102334576. Its totient is φ = 101914200.

The previous prime is 102124381. The next prime is 102124409. The reversal of 102124387 is 783421201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102124387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102124381) 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 3 ways as a sum of consecutive naturals, for example, 104364 + ... + 105337.

It is an arithmetic number, because the mean of its divisors is an integer number (25583644).

Almost surely, 2^102124387 is an apocalyptic number.

102124387 is a deficient number, since it is larger than the sum of its proper divisors (210189).

102124387 is an equidigital number, since it uses as much as digits as its factorization.

102124387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210188.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 102124387 is about 10105.6611362147. The cubic root of 102124387 is about 467.4227227927.

Adding to 102124387 its reverse (783421201), we get a palindrome (885545588).

The spelling of 102124387 in words is "one hundred two million, one hundred twenty-four thousand, three hundred eighty-seven".