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104402401 = 510720443
BaseRepresentation
bin1100011100100…
…00110111100001
321021110012011121
412032100313201
5203211334101
614205412241
72405256115
oct616206741
9237405147
10104402401
1153a29084
122ab6a081
131882558c
14dc19745
1592740a1
hex6390de1

104402401 has 4 divisors (see below), whose sum is σ = 104427952. Its totient is φ = 104376852.

The previous prime is 104402399. The next prime is 104402437. The reversal of 104402401 is 104204401.

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: 104204401 = 714886343.

It is a cyclic number.

It is not a de Polignac number, because 104402401 - 21 = 104402399 is a prime.

It is a super-2 number, since 2×1044024012 = 21799722669129602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104402461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (26106988).

Almost surely, 2104402401 is an apocalyptic number.

It is an amenable number.

104402401 is a deficient number, since it is larger than the sum of its proper divisors (25551).

104402401 is an equidigital number, since it uses as much as digits as its factorization.

104402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25550.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 104402401 is about 10217.7493118592. The cubic root of 104402401 is about 470.8726822328.

Adding to 104402401 its reverse (104204401), we get a palindrome (208606802).

The spelling of 104402401 in words is "one hundred four million, four hundred two thousand, four hundred one".

Divisors: 1 5107 20443 104402401