123420401103 has 4 divisors (see below), whose sum is σ = 164560534808. Its totient is φ = 82280267400.

The previous prime is 123420401059. The next prime is 123420401119. The reversal of 123420401103 is 301104024321.

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

It is not a de Polignac number, because 123420401103 - 2⁸ = 123420400847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123420401103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123420401173) 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, 20570066848 + ... + 20570066853.

It is an arithmetic number, because the mean of its divisors is an integer number (41140133702).

Almost surely, 2^123420401103 is an apocalyptic number.

123420401103 is a deficient number, since it is larger than the sum of its proper divisors (41140133705).

123420401103 is an equidigital number, since it uses as much as digits as its factorization.

123420401103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41140133704.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 123420401103 its reverse (301104024321), we get a palindrome (424524425424).

The spelling of 123420401103 in words is "one hundred twenty-three billion, four hundred twenty million, four hundred one thousand, one hundred three".