2104420451 has 4 divisors (see below), whose sum is σ = 2405051952.
Its totient is φ = 1803788952.
The previous prime is 2104420433. The next prime is 2104420457. The reversal of 2104420451 is 1540244012.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 2104420451 - 222 = 2100226147 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2104420457) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150315740 + ... + 150315753.
It is an arithmetic number, because the mean of its divisors is an integer number (601262988).
Almost surely, 22104420451 is an apocalyptic number.
2104420451 is a deficient number, since it is larger than the sum of its proper divisors (300631501).
2104420451 is an equidigital number, since it uses as much as digits as its factorization.
2104420451 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 300631500.
The product of its (nonzero) digits is 1280, while the sum is 23.
The square root of 2104420451 is about 45873.9626694708.
The cubic root of 2104420451 is about 1281.4770650164.
Adding to 2104420451 its reverse (1540244012), we get a palindrome (3644664463).
The spelling of 2104420451 in words is "two billion, one hundred four million, four hundred twenty thousand, four hundred fifty-one".