2124491 has 2 divisors, whose sum is σ = 2124492. Its totient is φ = 2124490.

The previous prime is 2124469. The next prime is 2124509. The reversal of 2124491 is 1944212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2124491 - 2¹⁸ = 1862347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2124401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062245 + 1062246.

It is an arithmetic number, because the mean of its divisors is an integer number (1062246).

2^2124491 is an apocalyptic number.

2124491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124491 is an equidigital number, since it uses as much as digits as its factorization.

2124491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 2124491 is about 1457.5633776958. The cubic root of 2124491 is about 128.5538137538.

The spelling of 2124491 in words is "two million, one hundred twenty-four thousand, four hundred ninety-one".