420212203 has 4 divisors (see below), whose sum is σ = 421555048. Its totient is φ = 418869360.

The previous prime is 420212183. The next prime is 420212251. The reversal of 420212203 is 302212024.

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-420212203 is a prime.

It is a super-2 number, since 2×420212203² = 353156591100226418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420212603) 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, 670953 + ... + 671578.

It is an arithmetic number, because the mean of its divisors is an integer number (105388762).

Almost surely, 2^420212203 is an apocalyptic number.

420212203 is a deficient number, since it is larger than the sum of its proper divisors (1342845).

420212203 is a wasteful number, since it uses less digits than its factorization.

420212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342844.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420212203 is about 20499.0781012220. The cubic root of 420212203 is about 749.0133413904.

Adding to 420212203 its reverse (302212024), we get a palindrome (722424227).

The spelling of 420212203 in words is "four hundred twenty million, two hundred twelve thousand, two hundred three".