1126421 has 2 divisors, whose sum is σ = 1126422. Its totient is φ = 1126420.

The previous prime is 1126399. The next prime is 1126439. The reversal of 1126421 is 1246211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 422500 = 839^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126421 - 2⁶ = 1126357 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1126421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1126441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563210 + 563211.

It is an arithmetic number, because the mean of its divisors is an integer number (563211).

2^1126421 is an apocalyptic number.

It is an amenable number.

1126421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126421 is an equidigital number, since it uses as much as digits as its factorization.

1126421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 1126421 is about 1061.3298262086. The cubic root of 1126421 is about 104.0479623450.

The spelling of 1126421 in words is "one million, one hundred twenty-six thousand, four hundred twenty-one".