120404000020123 has 4 divisors (see below), whose sum is σ = 120408365516688. Its totient is φ = 120399634523560.

The previous prime is 120404000020081. The next prime is 120404000020133. The reversal of 120404000020123 is 321020000404021.

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 120404000020123 - 2¹³ = 120404000011931 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 120404000020123.

It is not an unprimeable number, because it can be changed into a prime (120404000020133) 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, 2182706911 + ... + 2182762072.

It is an arithmetic number, because the mean of its divisors is an integer number (30102091379172).

Almost surely, 2^{120404000020123} is an apocalyptic number.

120404000020123 is a deficient number, since it is larger than the sum of its proper divisors (4365496565).

120404000020123 is an equidigital number, since it uses as much as digits as its factorization.

120404000020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365496564.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 120404000020123 its reverse (321020000404021), we get a palindrome (441424000424144).

The spelling of 120404000020123 in words is "one hundred twenty trillion, four hundred four billion, twenty thousand, one hundred twenty-three".