1421320042123 has 4 divisors (see below), whose sum is σ = 1421422997920. Its totient is φ = 1421217086328.

The previous prime is 1421320042033. The next prime is 1421320042139. The reversal of 1421320042123 is 3212400231241.

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-1421320042123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421320042193) 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, 51457188 + ... + 51484801.

It is an arithmetic number, because the mean of its divisors is an integer number (355355749480).

Almost surely, 2^{1421320042123} is an apocalyptic number.

1421320042123 is a deficient number, since it is larger than the sum of its proper divisors (102955797).

1421320042123 is a wasteful number, since it uses less digits than its factorization.

1421320042123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102955796.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1421320042123 its reverse (3212400231241), we get a palindrome (4633720273364).

The spelling of 1421320042123 in words is "one trillion, four hundred twenty-one billion, three hundred twenty million, forty-two thousand, one hundred twenty-three".