4208421418 has 4 divisors (see below), whose sum is σ = 6312632130. Its totient is φ = 2104210708.

The previous prime is 4208421379. The next prime is 4208421419. The reversal of 4208421418 is 8141248024.

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

It can be written as a sum of positive squares in only one way, i.e., 4126392169 + 82029249 = 64237^2 + 9057^2 .

It is a super-2 number, since 2×4208421418² = 35421621662962261448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4208421419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052105353 + ... + 1052105356.

Almost surely, 2^4208421418 is an apocalyptic number.

4208421418 is a deficient number, since it is larger than the sum of its proper divisors (2104210712).

4208421418 is a wasteful number, since it uses less digits than its factorization.

4208421418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104210711.

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 4208421418 is about 64872.3470979739. The cubic root of 4208421418 is about 1614.5062877555.

The spelling of 4208421418 in words is "four billion, two hundred eight million, four hundred twenty-one thousand, four hundred eighteen".