12420470 has 16 divisors (see below), whose sum is σ = 22412160. Its totient is φ = 4955904.

The previous prime is 12420469. The next prime is 12420479. The reversal of 12420470 is 7402421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420479) 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, 3494 + ... + 6086.

It is an arithmetic number, because the mean of its divisors is an integer number (1400760).

Almost surely, 2^12420470 is an apocalyptic number.

12420470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12420470 is a deficient number, since it is larger than the sum of its proper divisors (9991690).

12420470 is a wasteful number, since it uses less digits than its factorization.

12420470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12420470 is about 3524.2687184720. The cubic root of 12420470 is about 231.5862000501.

Adding to 12420470 its reverse (7402421), we get a palindrome (19822891).

The spelling of 12420470 in words is "twelve million, four hundred twenty thousand, four hundred seventy".