420120806961 has 32 divisors (see below), whose sum is σ = 593840701440. Its totient is φ = 263456855424.

The previous prime is 420120806957. The next prime is 420120806969. The reversal of 420120806961 is 169608021024.

It is not a de Polignac number, because 420120806961 - 2² = 420120806957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420120806969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4825165 + ... + 4911461.

It is an arithmetic number, because the mean of its divisors is an integer number (18557521920).

Almost surely, 2^420120806961 is an apocalyptic number.

It is an amenable number.

420120806961 is a deficient number, since it is larger than the sum of its proper divisors (173719894479).

420120806961 is a wasteful number, since it uses less digits than its factorization.

420120806961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86925.

The product of its (nonzero) digits is 41472, while the sum is 39.

Adding to 420120806961 its reverse (169608021024), we get a palindrome (589728827985).

The spelling of 420120806961 in words is "four hundred twenty billion, one hundred twenty million, eight hundred six thousand, nine hundred sixty-one".