84378103 has 2 divisors, whose sum is σ = 84378104. Its totient is φ = 84378102.

The previous prime is 84378101. The next prime is 84378137. The reversal of 84378103 is 30187348.

It is an a-pointer prime, because the next prime (84378137) can be obtained adding 84378103 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84378103 - 2¹ = 84378101 is a prime.

Together with 84378101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84378101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42189051 + 42189052.

It is an arithmetic number, because the mean of its divisors is an integer number (42189052).

Almost surely, 2^84378103 is an apocalyptic number.

84378103 is a deficient number, since it is larger than the sum of its proper divisors (1).

84378103 is an equidigital number, since it uses as much as digits as its factorization.

84378103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 84378103 is about 9185.7554398101. The cubic root of 84378103 is about 438.6080373932.

The spelling of 84378103 in words is "eighty-four million, three hundred seventy-eight thousand, one hundred three".