102123513 has 12 divisors (see below), whose sum is σ = 150012720. Its totient is φ = 66928056.

The previous prime is 102123493. The next prime is 102123521. The reversal of 102123513 is 315321201.

It is not a de Polignac number, because 102123513 - 2⁸ = 102123257 is a prime.

It is a super-2 number, since 2×102123513² = 20858423814922338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102123523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95631 + ... + 96692.

It is an arithmetic number, because the mean of its divisors is an integer number (12501060).

Almost surely, 2^102123513 is an apocalyptic number.

It is an amenable number.

102123513 is a deficient number, since it is larger than the sum of its proper divisors (47889207).

102123513 is a wasteful number, since it uses less digits than its factorization.

102123513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192388 (or 192385 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 102123513 is about 10105.6178930336. The cubic root of 102123513 is about 467.4213893579.

Adding to 102123513 its reverse (315321201), we get a palindrome (417444714).

The spelling of 102123513 in words is "one hundred two million, one hundred twenty-three thousand, five hundred thirteen".