1126401 has 4 divisors (see below), whose sum is σ = 1501872. Its totient is φ = 750932.

The previous prime is 1126399. The next prime is 1126421. The reversal of 1126401 is 1046211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1126401 - 2¹ = 1126399 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1126421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187731 + ... + 187736.

It is an arithmetic number, because the mean of its divisors is an integer number (375468).

It is a Proth number, since it is equal to 275 ⋅ 2¹² + 1 and 275 < 2¹².

2^1126401 is an apocalyptic number.

It is an amenable number.

1126401 is a deficient number, since it is larger than the sum of its proper divisors (375471).

1126401 is an equidigital number, since it uses as much as digits as its factorization.

1126401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375470.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1126401 is about 1061.3204040251. The cubic root of 1126401 is about 104.0473465386.

The spelling of 1126401 in words is "one million, one hundred twenty-six thousand, four hundred one".