2112143420 has 12 divisors (see below), whose sum is σ = 4435501224. Its totient is φ = 844857360.

The previous prime is 2112143401. The next prime is 2112143437. The reversal of 2112143420 is 243412112.

It is a super-2 number, since 2×2112143420² = 8922299653298592800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 105607171 = 2112143420 / (2 + 1 + 1 + 2 + 1 + 4 + 3 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2112143392 and 2112143401.

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, 52803566 + ... + 52803605.

It is an arithmetic number, because the mean of its divisors is an integer number (369625102).

Almost surely, 2^2112143420 is an apocalyptic number.

2112143420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112143420 is an abundant number, since it is smaller than the sum of its proper divisors (2323357804).

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

2112143420 is a wasteful number, since it uses less digits than its factorization.

2112143420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105607180 (or 105607178 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2112143420 is about 45958.0615344033. The cubic root of 2112143420 is about 1283.0427732964.

Adding to 2112143420 its reverse (243412112), we get a palindrome (2355555532).

The spelling of 2112143420 in words is "two billion, one hundred twelve million, one hundred forty-three thousand, four hundred twenty".