12420546 has 8 divisors (see below), whose sum is σ = 24841104. Its totient is φ = 4140180.

The previous prime is 12420521. The next prime is 12420571. The reversal of 12420546 is 64502421.

12420546 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12420521) and next prime (12420571).

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

12420546 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035040 + ... + 1035051.

It is an arithmetic number, because the mean of its divisors is an integer number (3105138).

Almost surely, 2^12420546 is an apocalyptic number.

12420546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12420546 is a wasteful number, since it uses less digits than its factorization.

12420546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070096.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 12420546 is about 3524.2795008342. The cubic root of 12420546 is about 231.5866724025.

Adding to 12420546 its reverse (64502421), we get a palindrome (76922967).

It can be divided in two parts, 124205 and 46, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 12420546 in words is "twelve million, four hundred twenty thousand, five hundred forty-six".