2123794 has 4 divisors (see below), whose sum is σ = 3185694. Its totient is φ = 1061896.

The previous prime is 2123791. The next prime is 2123831. The reversal of 2123794 is 4973212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 149769 = 1405^2 + 387^2 .

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 2¹⁹ + 3¹³ + 7⁴ + 9³ + 4 .

It is not an unprimeable number, because it can be changed into a prime (2123791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530947 + ... + 530950.

2^2123794 is an apocalyptic number.

2123794 is a deficient number, since it is larger than the sum of its proper divisors (1061900).

2123794 is a wasteful number, since it uses less digits than its factorization.

2123794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061899.

The product of its digits is 3024, while the sum is 28.

The square root of 2123794 is about 1457.3242604170. The cubic root of 2123794 is about 128.5397536316.

Subtracting from 2123794 its product of digits (3024), we obtain a triangular number (2120770 = T₂₀₅₉).

The spelling of 2123794 in words is "two million, one hundred twenty-three thousand, seven hundred ninety-four".