442020203 has 2 divisors, whose sum is σ = 442020204. Its totient is φ = 442020202.

The previous prime is 442020149. The next prime is 442020209. The reversal of 442020203 is 302020244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442020203 is a prime.

It is a super-2 number, since 2×442020203² = 390763719720322418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442020209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221010101 + 221010102.

It is an arithmetic number, because the mean of its divisors is an integer number (221010102).

Almost surely, 2^442020203 is an apocalyptic number.

442020203 is a deficient number, since it is larger than the sum of its proper divisors (1).

442020203 is an equidigital number, since it uses as much as digits as its factorization.

442020203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 442020203 is about 21024.2765154951. The cubic root of 442020203 is about 761.7527660576.

Adding to 442020203 its reverse (302020244), we get a palindrome (744040447).

The spelling of 442020203 in words is "four hundred forty-two million, twenty thousand, two hundred three".