1069421 has 2 divisors, whose sum is σ = 1069422. Its totient is φ = 1069420.

The previous prime is 1069379. The next prime is 1069427. The reversal of 1069421 is 1249601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 346921 = 850^2 + 589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1069421 is a prime.

It is a super-4 number, since 4×1069421⁴ (a number of 25 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1069427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534710 + 534711.

It is an arithmetic number, because the mean of its divisors is an integer number (534711).

2^1069421 is an apocalyptic number.

It is an amenable number.

1069421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069421 is an equidigital number, since it uses as much as digits as its factorization.

1069421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1069421 is about 1034.1281351941. The cubic root of 1069421 is about 102.2624600482.

The spelling of 1069421 in words is "one million, sixty-nine thousand, four hundred twenty-one".