102129469 has 8 divisors (see below), whose sum is σ = 113533952. Its totient is φ = 91231920.

The previous prime is 102129451. The next prime is 102129491. The reversal of 102129469 is 964921201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102129469 - 2¹⁹ = 101605181 is a prime.

It is a super-5 number, since 5×102129469⁵ (a number of 41 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102129869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126309 + ... + 127114.

It is an arithmetic number, because the mean of its divisors is an integer number (14191744).

Almost surely, 2^102129469 is an apocalyptic number.

It is an amenable number.

102129469 is a deficient number, since it is larger than the sum of its proper divisors (11404483).

102129469 is a wasteful number, since it uses less digits than its factorization.

102129469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253467.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 102129469 is about 10105.9125763090. The cubic root of 102129469 is about 467.4304760922.

The spelling of 102129469 in words is "one hundred two million, one hundred twenty-nine thousand, four hundred sixty-nine".