102123487 has 2 divisors, whose sum is σ = 102123488. Its totient is φ = 102123486.

The previous prime is 102123451. The next prime is 102123491. The reversal of 102123487 is 784321201.

It is a strong prime.

It is an emirp because it is prime and its reverse (784321201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102123487 is a prime.

It is a pancake number, because a pancake can be divided into 102123487 parts by 14291 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102123407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51061743 + 51061744.

It is an arithmetic number, because the mean of its divisors is an integer number (51061744).

Almost surely, 2^102123487 is an apocalyptic number.

102123487 is a deficient number, since it is larger than the sum of its proper divisors (1).

102123487 is an equidigital number, since it uses as much as digits as its factorization.

102123487 is an evil number, because the sum of its binary digits is even.

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

The square root of 102123487 is about 10105.6166066203. The cubic root of 102123487 is about 467.4213496904.

Adding to 102123487 its reverse (784321201), we get a palindrome (886444688).

The spelling of 102123487 in words is "one hundred two million, one hundred twenty-three thousand, four hundred eighty-seven".