1404212421 has 8 divisors (see below), whose sum is σ = 1872886720. Its totient is φ = 935839872.
The previous prime is 1404212387. The next prime is 1404212441. The reversal of 1404212421 is 1242124041.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1404212421 - 225 = 1370657989 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 (1404212441) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64345 + ... + 83358.
It is an arithmetic number, because the mean of its divisors is an integer number (234110840).
Almost surely, 21404212421 is an apocalyptic number.
It is an amenable number.
1404212421 is a deficient number, since it is larger than the sum of its proper divisors (468674299).
1404212421 is a wasteful number, since it uses less digits than its factorization.
1404212421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 150875.
The product of its (nonzero) digits is 512, while the sum is 21.
The square root of 1404212421 is about 37472.8224317304. The cubic root of 1404212421 is about 1119.8098159746.
Adding to 1404212421 its reverse (1242124041), we get a palindrome (2646336462).
The spelling of 1404212421 in words is "one billion, four hundred four million, two hundred twelve thousand, four hundred twenty-one".
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