102678479 has 4 divisors (see below), whose sum is σ = 105990720. Its totient is φ = 99366240.

The previous prime is 102678461. The next prime is 102678481. The reversal of 102678479 is 974876201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974876201 = 13 ⋅74990477.

It is a cyclic number.

It is not a de Polignac number, because 102678479 - 2²⁰ = 101629903 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 (102678449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656074 + ... + 1656135.

It is an arithmetic number, because the mean of its divisors is an integer number (26497680).

Almost surely, 2^102678479 is an apocalyptic number.

102678479 is a deficient number, since it is larger than the sum of its proper divisors (3312241).

102678479 is an equidigital number, since it uses as much as digits as its factorization.

102678479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312240.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 102678479 is about 10133.0389814705. The cubic root of 102678479 is about 468.2665571247.

The spelling of 102678479 in words is "one hundred two million, six hundred seventy-eight thousand, four hundred seventy-nine".