102130291 has 4 divisors (see below), whose sum is σ = 103141584. Its totient is φ = 101119000.

The previous prime is 102130283. The next prime is 102130297. The reversal of 102130291 is 192031201.

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 102130291 - 2³ = 102130283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102130297) 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, 505495 + ... + 505696.

It is an arithmetic number, because the mean of its divisors is an integer number (25785396).

Almost surely, 2^102130291 is an apocalyptic number.

102130291 is a deficient number, since it is larger than the sum of its proper divisors (1011293).

102130291 is a wasteful number, since it uses less digits than its factorization.

102130291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011292.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 102130291 is about 10105.9532454885. The cubic root of 102130291 is about 467.4317301436.

Adding to 102130291 its reverse (192031201), we get a palindrome (294161492).

The spelling of 102130291 in words is "one hundred two million, one hundred thirty thousand, two hundred ninety-one".