6420234 has 8 divisors (see below), whose sum is σ = 12840480. Its totient is φ = 2140076.

The previous prime is 6420221. The next prime is 6420259. The reversal of 6420234 is 4320246.

6420234 is digitally balanced in base 4, 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.

6420234 is an admirable number.

It is a super-2 number, since 2×6420234² = 82438809229512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6420234.

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, 535014 + ... + 535025.

It is an arithmetic number, because the mean of its divisors is an integer number (1605060).

Almost surely, 2^6420234 is an apocalyptic number.

6420234 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.

6420234 is a wasteful number, since it uses less digits than its factorization.

6420234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070044.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 6420234 is about 2533.8180676599. The cubic root of 6420234 is about 185.8590098157.

The spelling of 6420234 in words is "six million, four hundred twenty thousand, two hundred thirty-four".