6420212 has 6 divisors (see below), whose sum is σ = 11235378. Its totient is φ = 3210104.

The previous prime is 6420199. The next prime is 6420221. The reversal of 6420212 is 2120246.

It can be written as a sum of positive squares in only one way, i.e., 5262436 + 1157776 = 2294^2 + 1076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802523 + ... + 802530.

It is an arithmetic number, because the mean of its divisors is an integer number (1872563).

Almost surely, 2^6420212 is an apocalyptic number.

It is an amenable number.

6420212 is a deficient number, since it is larger than the sum of its proper divisors (4815166).

6420212 is a wasteful number, since it uses less digits than its factorization.

6420212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605057 (or 1605055 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 6420212 is about 2533.8137263816. The cubic root of 6420212 is about 185.8587975232.

Adding to 6420212 its reverse (2120246), we get a palindrome (8540458).

The spelling of 6420212 in words is "six million, four hundred twenty thousand, two hundred twelve".