1421503110123 has 4 divisors (see below), whose sum is σ = 1895337480168. Its totient is φ = 947668740080.

The previous prime is 1421503110029. The next prime is 1421503110163. The reversal of 1421503110123 is 3210113051241.

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

It is a cyclic number.

It is not a de Polignac number, because 1421503110123 - 2¹⁶ = 1421503044587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421503110093 and 1421503110102.

It is not an unprimeable number, because it can be changed into a prime (1421503110163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236917185018 + ... + 236917185023.

It is an arithmetic number, because the mean of its divisors is an integer number (473834370042).

Almost surely, 2^{1421503110123} is an apocalyptic number.

1421503110123 is a deficient number, since it is larger than the sum of its proper divisors (473834370045).

1421503110123 is an equidigital number, since it uses as much as digits as its factorization.

1421503110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473834370044.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 1421503110123 its reverse (3210113051241), we get a palindrome (4631616161364).

The spelling of 1421503110123 in words is "one trillion, four hundred twenty-one billion, five hundred three million, one hundred ten thousand, one hundred twenty-three".