420406546 has 8 divisors (see below), whose sum is σ = 720696960. Its totient is φ = 180174228.

The previous prime is 420406523. The next prime is 420406561. The reversal of 420406546 is 645604024.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15014506 + ... + 15014533.

It is an arithmetic number, because the mean of its divisors is an integer number (90087120).

Almost surely, 2^420406546 is an apocalyptic number.

420406546 is a deficient number, since it is larger than the sum of its proper divisors (300290414).

420406546 is a wasteful number, since it uses less digits than its factorization.

420406546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30029048.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 420406546 is about 20503.8178396122. The cubic root of 420406546 is about 749.1287934277.

The spelling of 420406546 in words is "four hundred twenty million, four hundred six thousand, five hundred forty-six".