420120011 has 4 divisors (see below), whose sum is σ = 420384024. Its totient is φ = 419856000.

The previous prime is 420120007. The next prime is 420120017. The reversal of 420120011 is 110021024.

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 420120011 - 2² = 420120007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420119974 and 420120001.

It is not an unprimeable number, because it can be changed into a prime (420120017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129605 + ... + 132806.

It is an arithmetic number, because the mean of its divisors is an integer number (105096006).

Almost surely, 2^420120011 is an apocalyptic number.

420120011 is a deficient number, since it is larger than the sum of its proper divisors (264013).

420120011 is a wasteful number, since it uses less digits than its factorization.

420120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264012.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 420120011 is about 20496.8292913807. The cubic root of 420120011 is about 748.9585610611.

Adding to 420120011 its reverse (110021024), we get a palindrome (530141035).

The spelling of 420120011 in words is "four hundred twenty million, one hundred twenty thousand, eleven".