2117420 has 12 divisors (see below), whose sum is σ = 4446624. Its totient is φ = 846960.

The previous prime is 2117419. The next prime is 2117429. The reversal of 2117420 is 247112.

It is not an unprimeable number, because it can be changed into a prime (2117429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52916 + ... + 52955.

It is an arithmetic number, because the mean of its divisors is an integer number (370552).

2^2117420 is an apocalyptic number.

2117420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2117420 is an abundant number, since it is smaller than the sum of its proper divisors (2329204).

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

2117420 is a wasteful number, since it uses less digits than its factorization.

2117420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105880 (or 105878 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 2117420 is about 1455.1357325006. The cubic root of 2117420 is about 128.4110322007.

The spelling of 2117420 in words is "two million, one hundred seventeen thousand, four hundred twenty".