420416506 has 8 divisors (see below), whose sum is σ = 632316564. Its totient is φ = 209644320.

The previous prime is 420416467. The next prime is 420416539. The reversal of 420416506 is 605614024.

It can be written as a sum of positive squares in 2 ways, for example, as 416772225 + 3644281 = 20415^2 + 1909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281035 + ... + 282526.

Almost surely, 2^420416506 is an apocalyptic number.

420416506 is a deficient number, since it is larger than the sum of its proper divisors (211900058).

420416506 is a wasteful number, since it uses less digits than its factorization.

420416506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563936.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 420416506 is about 20504.0607197696. The cubic root of 420416506 is about 749.1347093393.

The spelling of 420416506 in words is "four hundred twenty million, four hundred sixteen thousand, five hundred six".