104242399 has 4 divisors (see below), whose sum is σ = 104323464. Its totient is φ = 104161336.

The previous prime is 104242393. The next prime is 104242409. The reversal of 104242399 is 993242401.

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

It is a cyclic number.

It is not a de Polignac number, because 104242399 - 2¹⁷ = 104111327 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 (104242393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38572 + ... + 41185.

It is an arithmetic number, because the mean of its divisors is an integer number (26080866).

Almost surely, 2^104242399 is an apocalyptic number.

104242399 is a deficient number, since it is larger than the sum of its proper divisors (81065).

104242399 is an equidigital number, since it uses as much as digits as its factorization.

104242399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81064.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 104242399 is about 10209.9166989746. The cubic root of 104242399 is about 470.6320137847.

The spelling of 104242399 in words is "one hundred four million, two hundred forty-two thousand, three hundred ninety-nine".