1126021 has 8 divisors (see below), whose sum is σ = 1245944. Its totient is φ = 1010880.

The previous prime is 1125991. The next prime is 1126031. The reversal of 1126021 is 1206211.

It can be written as a sum of positive squares in 4 ways, for example, as 261121 + 864900 = 511^2 + 930^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1126021 - 2¹¹ = 1123973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

1126021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1125992 and 1126010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690 + ... + 1651.

It is an arithmetic number, because the mean of its divisors is an integer number (155743).

2^1126021 is an apocalyptic number.

It is an amenable number.

1126021 is a deficient number, since it is larger than the sum of its proper divisors (119923).

1126021 is a wasteful number, since it uses less digits than its factorization.

1126021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1126021 is about 1061.1413666425. The cubic root of 1126021 is about 104.0356448330.

The spelling of 1126021 in words is "one million, one hundred twenty-six thousand, twenty-one".