2123461 has 2 divisors, whose sum is σ = 2123462. Its totient is φ = 2123460.

The previous prime is 2123423. The next prime is 2123479. The reversal of 2123461 is 1643212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 756900 = 1169^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123461 - 2²¹ = 26309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061730 + 1061731.

It is an arithmetic number, because the mean of its divisors is an integer number (1061731).

2^2123461 is an apocalyptic number.

It is an amenable number.

2123461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123461 is an equidigital number, since it uses as much as digits as its factorization.

2123461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 2123461 is about 1457.2100054556. The cubic root of 2123461 is about 128.5330351559.

Adding to 2123461 its reverse (1643212), we get a palindrome (3766673).

Subtracting from 2123461 its reverse (1643212), we obtain a square (480249 = 693²).

The spelling of 2123461 in words is "two million, one hundred twenty-three thousand, four hundred sixty-one".