2121496 has 16 divisors (see below), whose sum is σ = 4284000. Its totient is φ = 979104.

The previous prime is 2121479. The next prime is 2121503. The reversal of 2121496 is 6941212.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2121496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10096 + ... + 10303.

It is an arithmetic number, because the mean of its divisors is an integer number (267750).

2^2121496 is an apocalyptic number.

2121496 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2121496 is an abundant number, since it is smaller than the sum of its proper divisors (2162504).

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

2121496 is a wasteful number, since it uses less digits than its factorization.

2121496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20418 (or 20414 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 2121496 is about 1456.5356157678. The cubic root of 2121496 is about 128.4933757884.

The spelling of 2121496 in words is "two million, one hundred twenty-one thousand, four hundred ninety-six".