420203011 has 4 divisors (see below), whose sum is σ = 434692800. Its totient is φ = 405713224.

The previous prime is 420202999. The next prime is 420203033. The reversal of 420203011 is 110302024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420203011 is a prime.

It is a super-2 number, since 2×420203011² = 353141140906932242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420202982 and 420203000.

It is not an unprimeable number, because it can be changed into a prime (420203071) 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, 7244851 + ... + 7244908.

It is an arithmetic number, because the mean of its divisors is an integer number (108673200).

Almost surely, 2^420203011 is an apocalyptic number.

420203011 is a deficient number, since it is larger than the sum of its proper divisors (14489789).

420203011 is a wasteful number, since it uses less digits than its factorization.

420203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14489788.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 420203011 is about 20498.8538947913. The cubic root of 420203011 is about 749.0078798793.

Adding to 420203011 its reverse (110302024), we get a palindrome (530505035).

The spelling of 420203011 in words is "four hundred twenty million, two hundred three thousand, eleven".