104642505 has 48 divisors (see below), whose sum is σ = 199143360. Its totient is φ = 50409600.

The previous prime is 104642501. The next prime is 104642509. The reversal of 104642505 is 505246401.

104642505 is a `hidden beast` number, since 10 + 4 + 642 + 5 + 0 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (104642501) and next prime (104642509).

It is not a de Polignac number, because 104642505 - 2² = 104642501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104642501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88015 + ... + 89195.

It is an arithmetic number, because the mean of its divisors is an integer number (4148820).

Almost surely, 2^104642505 is an apocalyptic number.

104642505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104642505 is a deficient number, since it is larger than the sum of its proper divisors (94500855).

104642505 is a wasteful number, since it uses less digits than its factorization.

104642505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 104642505 is about 10229.4919228669. The cubic root of 104642505 is about 471.2333759002.

Adding to 104642505 its reverse (505246401), we get a palindrome (609888906).

The spelling of 104642505 in words is "one hundred four million, six hundred forty-two thousand, five hundred five".