102026309 has 8 divisors (see below), whose sum is σ = 127201728. Its totient is φ = 79500960.

The previous prime is 102026303. The next prime is 102026359. The reversal of 102026309 is 903620201.

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

It is not a de Polignac number, because 102026309 - 2²⁴ = 85249093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102026303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662432 + ... + 662585.

It is an arithmetic number, because the mean of its divisors is an integer number (15900216).

Almost surely, 2^102026309 is an apocalyptic number.

It is an amenable number.

102026309 is a deficient number, since it is larger than the sum of its proper divisors (25175419).

102026309 is a wasteful number, since it uses less digits than its factorization.

102026309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325035.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 102026309 is about 10100.8073439701. The cubic root of 102026309 is about 467.2730407209.

The spelling of 102026309 in words is "one hundred two million, twenty-six thousand, three hundred nine".