1120399 has 8 divisors (see below), whose sum is σ = 1336320. Its totient is φ = 918456.

The previous prime is 1120391. The next prime is 1120423. The reversal of 1120399 is 9930211.

1120399 = 133² + 134² + ... + 178².

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

It is not a de Polignac number, because 1120399 - 2³ = 1120391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120391) 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, 3319 + ... + 3640.

It is an arithmetic number, because the mean of its divisors is an integer number (167040).

2^1120399 is an apocalyptic number.

1120399 is a deficient number, since it is larger than the sum of its proper divisors (215921).

1120399 is an equidigital number, since it uses as much as digits as its factorization.

1120399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1120399 is about 1058.4890174206. The cubic root of 1120399 is about 103.8622127464.

The spelling of 1120399 in words is "one million, one hundred twenty thousand, three hundred ninety-nine".