2143900 has 36 divisors (see below), whose sum is σ = 5077800. Its totient is φ = 779200.

The previous prime is 2143877. The next prime is 2143901. The reversal of 2143900 is 93412.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (141050).

2^2143900 is an apocalyptic number.

2143900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538900).

2143900 is an abundant number, since it is smaller than the sum of its proper divisors (2933900).

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

2143900 is a wasteful number, since it uses less digits than its factorization.

2143900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2143900 is about 1464.2062696219. The cubic root of 2143900 is about 128.9441097549.

It can be divided in two parts, 214 and 3900, that added together give a palindrome (4114).

The spelling of 2143900 in words is "two million, one hundred forty-three thousand, nine hundred".