2120940 has 36 divisors (see below), whose sum is σ = 6434064. Its totient is φ = 565536.

The previous prime is 2120933. The next prime is 2120941. The reversal of 2120940 is 490212.

It is a tau number, because it is divible by the number of its divisors (36).

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 (2120941) 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, 5712 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (178724).

2^2120940 is an apocalyptic number.

2120940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120940 is an abundant number, since it is smaller than the sum of its proper divisors (4313124).

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

2120940 is a wasteful number, since it uses less digits than its factorization.

2120940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11798 (or 11793 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2120940 is about 1456.3447394075. The cubic root of 2120940 is about 128.4821496600.

The spelling of 2120940 in words is "two million, one hundred twenty thousand, nine hundred forty".