1400320143 has 20 divisors (see below), whose sum is σ = 2099588128. Its totient is φ = 930087360.

The previous prime is 1400320139. The next prime is 1400320169. The reversal of 1400320143 is 3410230041.

It is not a de Polignac number, because 1400320143 - 2² = 1400320139 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 (1400320133) 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 19 ways as a sum of consecutive naturals, for example, 9946 + ... + 53847.

Almost surely, 2^1400320143 is an apocalyptic number.

1400320143 is a deficient number, since it is larger than the sum of its proper divisors (699267985).

1400320143 is an equidigital number, since it uses as much as digits as its factorization.

1400320143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64076 (or 64067 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1400320143 is about 37420.8517139843. The cubic root of 1400320143 is about 1118.7742071143.

Adding to 1400320143 its reverse (3410230041), we get a palindrome (4810550184).

The spelling of 1400320143 in words is "one billion, four hundred million, three hundred twenty thousand, one hundred forty-three".