10212420 has 24 divisors (see below), whose sum is σ = 28594944. Its totient is φ = 2723296.

The previous prime is 10212373. The next prime is 10212421. The reversal of 10212420 is 2421201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10212396 and 10212405.

It is not an unprimeable number, because it can be changed into a prime (10212421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85044 + ... + 85163.

It is an arithmetic number, because the mean of its divisors is an integer number (1191456).

Almost surely, 2^10212420 is an apocalyptic number.

10212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212420 is an abundant number, since it is smaller than the sum of its proper divisors (18382524).

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

10212420 is a wasteful number, since it uses less digits than its factorization.

10212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170219 (or 170217 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10212420 is about 3195.6877194119. The cubic root of 10212420 is about 216.9582766448.

Adding to 10212420 its reverse (2421201), we get a palindrome (12633621).

The spelling of 10212420 in words is "ten million, two hundred twelve thousand, four hundred twenty".