120420455151 has 4 divisors (see below), whose sum is σ = 160560606872. Its totient is φ = 80280303432.

The previous prime is 120420455119. The next prime is 120420455153. The reversal of 120420455151 is 151554024021.

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

It is not a de Polignac number, because 120420455151 - 2⁵ = 120420455119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120420455153) 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, 20070075856 + ... + 20070075861.

It is an arithmetic number, because the mean of its divisors is an integer number (40140151718).

Almost surely, 2^120420455151 is an apocalyptic number.

120420455151 is a deficient number, since it is larger than the sum of its proper divisors (40140151721).

120420455151 is an equidigital number, since it uses as much as digits as its factorization.

120420455151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40140151720.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 120420455151 its reverse (151554024021), we get a palindrome (271974479172).

The spelling of 120420455151 in words is "one hundred twenty billion, four hundred twenty million, four hundred fifty-five thousand, one hundred fifty-one".