120403415403121 has 4 divisors (see below), whose sum is σ = 120575174912244. Its totient is φ = 120231655894000.

The previous prime is 120403415403083. The next prime is 120403415403149. The reversal of 120403415403121 is 121304514304021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86011805805025 + 34391609598096 = 9274255^2 + 5864436^2 .

It is a cyclic number.

It is not a de Polignac number, because 120403415403121 - 2⁹ = 120403415402609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120403415403521) 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, 85879753510 + ... + 85879754911.

It is an arithmetic number, because the mean of its divisors is an integer number (30143793728061).

Almost surely, 2^{120403415403121} is an apocalyptic number.

It is an amenable number.

120403415403121 is a deficient number, since it is larger than the sum of its proper divisors (171759509123).

120403415403121 is an equidigital number, since it uses as much as digits as its factorization.

120403415403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171759509122.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 120403415403121 its reverse (121304514304021), we get a palindrome (241707929707142).

The spelling of 120403415403121 in words is "one hundred twenty trillion, four hundred three billion, four hundred fifteen million, four hundred three thousand, one hundred twenty-one".