2143420 has 12 divisors (see below), whose sum is σ = 4501224. Its totient is φ = 857360.

The previous prime is 2143417. The next prime is 2143441. The reversal of 2143420 is 243412.

It is a junction number, because it is equal to n+sod(n) for n = 2143394 and 2143403.

It is a congruent 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, 53566 + ... + 53605.

It is an arithmetic number, because the mean of its divisors is an integer number (375102).

2^2143420 is an apocalyptic number.

2143420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143420 is an abundant number, since it is smaller than the sum of its proper divisors (2357804).

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

2143420 is a wasteful number, since it uses less digits than its factorization.

2143420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107180 (or 107178 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2143420 is about 1464.0423491143. The cubic root of 2143420 is about 128.9344858931.

Adding to 2143420 its reverse (243412), we get a palindrome (2386832).

The spelling of 2143420 in words is "two million, one hundred forty-three thousand, four hundred twenty".