1009121 has 2 divisors, whose sum is σ = 1009122. Its totient is φ = 1009120.

The previous prime is 1009097. The next prime is 1009139. The reversal of 1009121 is 1219001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819025 + 190096 = 905^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009121 - 2¹⁴ = 992737 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1009096 and 1009105.

It is not a weakly prime, because it can be changed into another prime (1009321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504560 + 504561.

It is an arithmetic number, because the mean of its divisors is an integer number (504561).

2^1009121 is an apocalyptic number.

It is an amenable number.

1009121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009121 is an equidigital number, since it uses as much as digits as its factorization.

1009121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1009121 is about 1004.5501480762. The cubic root of 1009121 is about 100.3031136263.

The spelling of 1009121 in words is "one million, nine thousand, one hundred twenty-one".