120420635 has 4 divisors (see below), whose sum is σ = 144504768. Its totient is φ = 96336504.

The previous prime is 120420631. The next prime is 120420637. The reversal of 120420635 is 536024021.

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 120420635 - 2² = 120420631 is a prime.

It is a super-2 number, since 2×120420635² = 29002258667606450, which contains 22 as substring.

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 120420635.

It is not an unprimeable number, because it can be changed into a prime (120420631) 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, 12042059 + ... + 12042068.

It is an arithmetic number, because the mean of its divisors is an integer number (36126192).

Almost surely, 2^120420635 is an apocalyptic number.

120420635 is a deficient number, since it is larger than the sum of its proper divisors (24084133).

120420635 is an equidigital number, since it uses as much as digits as its factorization.

120420635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24084132.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 120420635 is about 10973.6336279284. The cubic root of 120420635 is about 493.8180622939.

Adding to 120420635 its reverse (536024021), we get a palindrome (656444656).

The spelling of 120420635 in words is "one hundred twenty million, four hundred twenty thousand, six hundred thirty-five".