2123444 has 6 divisors (see below), whose sum is σ = 3716034. Its totient is φ = 1061720.

The previous prime is 2123423. The next prime is 2123461. The reversal of 2123444 is 4443212.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 659344 = 1210^2 + 812^2 .

It is a super-2 number, since 2×2123444² = 9018028842272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265427 + ... + 265434.

It is an arithmetic number, because the mean of its divisors is an integer number (619339).

2^2123444 is an apocalyptic number.

It is an amenable number.

2123444 is a deficient number, since it is larger than the sum of its proper divisors (1592590).

2123444 is a wasteful number, since it uses less digits than its factorization.

2123444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530865 (or 530863 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 2123444 is about 1457.2041723794. The cubic root of 2123444 is about 128.5326921518.

Adding to 2123444 its product of digits (768), we get a palindrome (2124212).

Adding to 2123444 its reverse (4443212), we get a palindrome (6566656).

The spelling of 2123444 in words is "two million, one hundred twenty-three thousand, four hundred forty-four".