2139210 has 80 divisors (see below), whose sum is σ = 6098400. Its totient is φ = 536544.

The previous prime is 2139199. The next prime is 2139211. The reversal of 2139210 is 129312.

2139210 = T₄₆₅ + T₄₆₆ + ... + T₄₈₃.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2139211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15321 + ... + 15459.

It is an arithmetic number, because the mean of its divisors is an integer number (76230).

2^2139210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3049200).

2139210 is an abundant number, since it is smaller than the sum of its proper divisors (3959190).

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

2139210 is a wasteful number, since it uses less digits than its factorization.

2139210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2139210 is about 1462.6038424673. The cubic root of 2139210 is about 128.8500149753.

The spelling of 2139210 in words is "two million, one hundred thirty-nine thousand, two hundred ten".