4242021403 has 2 divisors, whose sum is σ = 4242021404. Its totient is φ = 4242021402.

The previous prime is 4242021397. The next prime is 4242021457. The reversal of 4242021403 is 3041202424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4242021403 - 2²¹ = 4239924251 is a prime.

It is not a weakly prime, because it can be changed into another prime (4242021463) 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 as a sum of consecutive naturals, namely, 2121010701 + 2121010702.

It is an arithmetic number, because the mean of its divisors is an integer number (2121010702).

Almost surely, 2^4242021403 is an apocalyptic number.

4242021403 is a deficient number, since it is larger than the sum of its proper divisors (1).

4242021403 is an equidigital number, since it uses as much as digits as its factorization.

4242021403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4242021403 is about 65130.8022597603. The cubic root of 4242021403 is about 1618.7916359887.

Adding to 4242021403 its reverse (3041202424), we get a palindrome (7283223827).

It can be divided in two parts, 4242021 and 403, that added together give a palindrome (4242424).

The spelling of 4242021403 in words is "four billion, two hundred forty-two million, twenty-one thousand, four hundred three".