120420455 has 4 divisors (see below), whose sum is σ = 144504552. Its totient is φ = 96336360.

The previous prime is 120420437. The next prime is 120420463. The reversal of 120420455 is 554024021.

It is a happy number.

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

It is not a de Polignac number, because 120420455 - 2⁸ = 120420199 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 120420455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12042041 + ... + 12042050.

It is an arithmetic number, because the mean of its divisors is an integer number (36126138).

Almost surely, 2^120420455 is an apocalyptic number.

120420455 is a deficient number, since it is larger than the sum of its proper divisors (24084097).

120420455 is an equidigital number, since it uses as much as digits as its factorization.

120420455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24084096.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 120420455 is about 10973.6254264486. The cubic root of 120420455 is about 493.8178162472.

Adding to 120420455 its reverse (554024021), we get a palindrome (674444476).

The spelling of 120420455 in words is "one hundred twenty million, four hundred twenty thousand, four hundred fifty-five".