1194821 has 2 divisors, whose sum is σ = 1194822. Its totient is φ = 1194820.

The previous prime is 1194803. The next prime is 1194847. The reversal of 1194821 is 1284911.

It is an a-pointer prime, because the next prime (1194847) can be obtained adding 1194821 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 81796 = 1055^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 1194821 - 2⁶ = 1194757 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p₉₂₅₇₃ and since 1194821 and 92573 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1194421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597410 + 597411.

It is an arithmetic number, because the mean of its divisors is an integer number (597411).

2^1194821 is an apocalyptic number.

It is an amenable number.

1194821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1194821 is an equidigital number, since it uses as much as digits as its factorization.

1194821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 26.

The square root of 1194821 is about 1093.0786796933. The cubic root of 1194821 is about 106.1127612189.

The spelling of 1194821 in words is "one million, one hundred ninety-four thousand, eight hundred twenty-one".