12420001 has 8 divisors (see below), whose sum is σ = 13735584. Its totient is φ = 11135520.

The previous prime is 12419989. The next prime is 12420011. The reversal of 12420001 is 10002421.

12420001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12420001 - 2⁵ = 12419969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12420001.

It is not an unprimeable number, because it can be changed into a prime (12420011) 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, 6931 + ... + 8536.

It is an arithmetic number, because the mean of its divisors is an integer number (1716948).

Almost surely, 2^12420001 is an apocalyptic number.

12420001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12420001 is a deficient number, since it is larger than the sum of its proper divisors (1315583).

12420001 is a wasteful number, since it uses less digits than its factorization.

12420001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12420001 is about 3524.2021792173. The cubic root of 12420001 is about 231.5832850962.

Adding to 12420001 its reverse (10002421), we get a palindrome (22422422).

The spelling of 12420001 in words is "twelve million, four hundred twenty thousand, one".