123401420123 has 4 divisors (see below), whose sum is σ = 123421180080. Its totient is φ = 123381660168.

The previous prime is 123401420069. The next prime is 123401420183. The reversal of 123401420123 is 321024104321.

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 123401420123 - 2¹⁴ = 123401403739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123401420183) 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, 9870608 + ... + 9883101.

It is an arithmetic number, because the mean of its divisors is an integer number (30855295020).

Almost surely, 2^123401420123 is an apocalyptic number.

123401420123 is a deficient number, since it is larger than the sum of its proper divisors (19759957).

123401420123 is an equidigital number, since it uses as much as digits as its factorization.

123401420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19759956.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 123401420123 its reverse (321024104321), we get a palindrome (444425524444).

The spelling of 123401420123 in words is "one hundred twenty-three billion, four hundred one million, four hundred twenty thousand, one hundred twenty-three".