1120644401 has 2 divisors, whose sum is σ = 1120644402. Its totient is φ = 1120644400.

The previous prime is 1120644379. The next prime is 1120644443. The reversal of 1120644401 is 1044460211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115626801 + 5017600 = 33401^2 + 2240^2 .

It is an emirp because it is prime and its reverse (1044460211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120644401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1120644461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560322200 + 560322201.

It is an arithmetic number, because the mean of its divisors is an integer number (560322201).

Almost surely, 2^1120644401 is an apocalyptic number.

It is an amenable number.

1120644401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120644401 is an equidigital number, since it uses as much as digits as its factorization.

1120644401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1120644401 is about 33476.0272583232. The cubic root of 1120644401 is about 1038.6979517316.

The spelling of 1120644401 in words is "one billion, one hundred twenty million, six hundred forty-four thousand, four hundred one".