1120401 has 6 divisors (see below), whose sum is σ = 1618370. Its totient is φ = 746928.

The previous prime is 1120391. The next prime is 1120423. The reversal of 1120401 is 1040211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 389376 = 855^2 + 624^2 .

It is not a de Polignac number, because 1120401 - 2⁵ = 1120369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 124489 = 1120401 / (1 + 1 + 2 + 0 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120481) 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 in 5 ways as a sum of consecutive naturals, for example, 62236 + ... + 62253.

2^1120401 is an apocalyptic number.

It is an amenable number.

1120401 is a deficient number, since it is larger than the sum of its proper divisors (497969).

1120401 is a wasteful number, since it uses less digits than its factorization.

1120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124495 (or 124492 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1120401 is about 1058.4899621631. The cubic root of 1120401 is about 103.8622745471.

Adding to 1120401 its reverse (1040211), we get a palindrome (2160612).

It can be divided in two parts, 1120 and 401, that added together give a square (1521 = 39²).

The spelling of 1120401 in words is "one million, one hundred twenty thousand, four hundred one".