1406143423403 has 4 divisors (see below), whose sum is σ = 1406452538400. Its totient is φ = 1405834308408.

The previous prime is 1406143423397. The next prime is 1406143423423. The reversal of 1406143423403 is 3043243416041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406143423403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406143423423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154550675 + ... + 154559772.

It is an arithmetic number, because the mean of its divisors is an integer number (351613134600).

Almost surely, 2^{1406143423403} is an apocalyptic number.

1406143423403 is a deficient number, since it is larger than the sum of its proper divisors (309114997).

1406143423403 is an equidigital number, since it uses as much as digits as its factorization.

1406143423403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309114996.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 1406143423403 its reverse (3043243416041), we get a palindrome (4449386839444).

The spelling of 1406143423403 in words is "one trillion, four hundred six billion, one hundred forty-three million, four hundred twenty-three thousand, four hundred three".