2102420 has 24 divisors (see below), whose sum is σ = 4558848. Its totient is φ = 813600.

The previous prime is 2102417. The next prime is 2102431. The reversal of 2102420 is 242012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (189952).

2^2102420 is an apocalyptic number.

2102420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102420 is an abundant number, since it is smaller than the sum of its proper divisors (2456428).

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

2102420 is a wasteful number, since it uses less digits than its factorization.

2102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3429 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2102420 is about 1449.9724135307. The cubic root of 2102420 is about 128.1070881167.

Adding to 2102420 its reverse (242012), we get a palindrome (2344432).

The spelling of 2102420 in words is "two million, one hundred two thousand, four hundred twenty".