2121294 has 32 divisors (see below), whose sum is σ = 5135616. Its totient is φ = 570240.

The previous prime is 2121289. The next prime is 2121323. The reversal of 2121294 is 4921212.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 2121294.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772 + ... + 2199.

It is an arithmetic number, because the mean of its divisors is an integer number (160488).

2^2121294 is an apocalyptic number.

2121294 is an abundant number, since it is smaller than the sum of its proper divisors (3014322).

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

2121294 is a wasteful number, since it uses less digits than its factorization.

2121294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000.

The product of its digits is 288, while the sum is 21.

The square root of 2121294 is about 1456.4662714941. The cubic root of 2121294 is about 128.4892974578.

It can be divided in two parts, 2121 and 294, that added together give a triangular number (2415 = T₆₉).

The spelling of 2121294 in words is "two million, one hundred twenty-one thousand, two hundred ninety-four".