1024921 has 2 divisors, whose sum is σ = 1024922. Its totient is φ = 1024920.

The previous prime is 1024909. The next prime is 1024931. The reversal of 1024921 is 1294201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 112896 = 955^2 + 336^2 .

It is an emirp because it is prime and its reverse (1294201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1024921 - 2¹⁵ = 992153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1024901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512460 + 512461.

It is an arithmetic number, because the mean of its divisors is an integer number (512461).

2^1024921 is an apocalyptic number.

1024921 is the 585-th hex number.

It is an amenable number.

1024921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024921 is an equidigital number, since it uses as much as digits as its factorization.

1024921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1024921 is about 1012.3838204950. The cubic root of 1024921 is about 100.8238933554.

The spelling of 1024921 in words is "one million, twenty-four thousand, nine hundred twenty-one".