2124991 has 4 divisors (see below), whose sum is σ = 2318184. Its totient is φ = 1931800.

The previous prime is 2124973. The next prime is 2125001. The reversal of 2124991 is 1994212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2124991 - 2¹³ = 2116799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96580 + ... + 96601.

It is an arithmetic number, because the mean of its divisors is an integer number (579546).

2^2124991 is an apocalyptic number.

2124991 is a deficient number, since it is larger than the sum of its proper divisors (193193).

2124991 is a wasteful number, since it uses less digits than its factorization.

2124991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193192.

The product of its digits is 1296, while the sum is 28.

The square root of 2124991 is about 1457.7348867335. The cubic root of 2124991 is about 128.5638980304.

The spelling of 2124991 in words is "two million, one hundred twenty-four thousand, nine hundred ninety-one".