1120400143 has 4 divisors (see below), whose sum is σ = 1123061848. Its totient is φ = 1117738440.

The previous prime is 1120400087. The next prime is 1120400167. The reversal of 1120400143 is 3410040211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3410040211 = 113 ⋅30177347.

It is a cyclic number.

It is not a de Polignac number, because 1120400143 - 2¹⁷ = 1120269071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120400243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330221 + ... + 1331062.

It is an arithmetic number, because the mean of its divisors is an integer number (280765462).

Almost surely, 2^1120400143 is an apocalyptic number.

1120400143 is a deficient number, since it is larger than the sum of its proper divisors (2661705).

1120400143 is an equidigital number, since it uses as much as digits as its factorization.

1120400143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661704.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1120400143 is about 33472.3788070104. The cubic root of 1120400143 is about 1038.6224806546.

Adding to 1120400143 its reverse (3410040211), we get a palindrome (4530440354).

The spelling of 1120400143 in words is "one billion, one hundred twenty million, four hundred thousand, one hundred forty-three".