102478349 has 4 divisors (see below), whose sum is σ = 103882236. Its totient is φ = 101074464.

The previous prime is 102478333. The next prime is 102478361. The reversal of 102478349 is 943874201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 943874201 = 401 ⋅2353801.

It can be written as a sum of positive squares in 2 ways, for example, as 81775849 + 20702500 = 9043^2 + 4550^2 .

It is a cyclic number.

It is not a de Polignac number, because 102478349 - 2⁴ = 102478333 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 (102475349) 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, 701834 + ... + 701979.

It is an arithmetic number, because the mean of its divisors is an integer number (25970559).

Almost surely, 2^102478349 is an apocalyptic number.

It is an amenable number.

102478349 is a deficient number, since it is larger than the sum of its proper divisors (1403887).

102478349 is an equidigital number, since it uses as much as digits as its factorization.

102478349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403886.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 102478349 is about 10123.1590425124. The cubic root of 102478349 is about 467.9621274172.

The spelling of 102478349 in words is "one hundred two million, four hundred seventy-eight thousand, three hundred forty-nine".