2121974 has 16 divisors (see below), whose sum is σ = 3402000. Its totient is φ = 989184.

The previous prime is 2121967. The next prime is 2121979. The reversal of 2121974 is 4791212.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502 + ... + 4950.

It is an arithmetic number, because the mean of its divisors is an integer number (212625).

2^2121974 is an apocalyptic number.

2121974 is a deficient number, since it is larger than the sum of its proper divisors (1280026).

2121974 is a wasteful number, since it uses less digits than its factorization.

2121974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607.

The product of its digits is 1008, while the sum is 26.

The square root of 2121974 is about 1456.6996945150. The cubic root of 2121974 is about 128.5030254603.

The spelling of 2121974 in words is "two million, one hundred twenty-one thousand, nine hundred seventy-four".