420402246 has 32 divisors (see below), whose sum is σ = 965520000. Its totient is φ = 120689280.

The previous prime is 420402239. The next prime is 420402247. The reversal of 420402246 is 642204024.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420402247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166371 + ... + 168878.

It is an arithmetic number, because the mean of its divisors is an integer number (30172500).

Almost surely, 2^420402246 is an apocalyptic number.

420402246 is an abundant number, since it is smaller than the sum of its proper divisors (545117754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420402246 is a wasteful number, since it uses less digits than its factorization.

420402246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335284.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 420402246 is about 20503.7129808237. The cubic root of 420402246 is about 749.1262393406.

The spelling of 420402246 in words is "four hundred twenty million, four hundred two thousand, two hundred forty-six".