104378161 has 4 divisors (see below), whose sum is σ = 105936112. Its totient is φ = 102820212.

The previous prime is 104378159. The next prime is 104378171. The reversal of 104378161 is 161873401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161873401 = 823 ⋅196687.

It is a cyclic number.

It is not a de Polignac number, because 104378161 - 2¹ = 104378159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104378171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778875 + ... + 779008.

It is an arithmetic number, because the mean of its divisors is an integer number (26484028).

Almost surely, 2^104378161 is an apocalyptic number.

It is an amenable number.

104378161 is a deficient number, since it is larger than the sum of its proper divisors (1557951).

104378161 is an equidigital number, since it uses as much as digits as its factorization.

104378161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557950.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 104378161 is about 10216.5630717967. The cubic root of 104378161 is about 470.8362372303.

The spelling of 104378161 in words is "one hundred four million, three hundred seventy-eight thousand, one hundred sixty-one".