102104378 has 4 divisors (see below), whose sum is σ = 153156570. Its totient is φ = 51052188.

The previous prime is 102104371. The next prime is 102104381. The reversal of 102104378 is 873401201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78552769 + 23551609 = 8863^2 + 4853^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102104371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25526093 + ... + 25526096.

Almost surely, 2^102104378 is an apocalyptic number.

102104378 is a deficient number, since it is larger than the sum of its proper divisors (51052192).

102104378 is an equidigital number, since it uses as much as digits as its factorization.

102104378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51052191.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 102104378 is about 10104.6710980615. The cubic root of 102104378 is about 467.3921937734.

Adding to 102104378 its reverse (873401201), we get a palindrome (975505579).

The spelling of 102104378 in words is "one hundred two million, one hundred four thousand, three hundred seventy-eight".