406020324420 has 72 divisors (see below), whose sum is σ = 1271323872000. Its totient is φ = 104779437120.

The previous prime is 406020324379. The next prime is 406020324427. The reversal of 406020324420 is 24423020604.

406020324420 is a `hidden beast` number, since 4 + 0 + 602 + 0 + 32 + 4 + 4 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (406020324427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36376170 + ... + 36387329.

It is an arithmetic number, because the mean of its divisors is an integer number (17657276000).

Almost surely, 2^406020324420 is an apocalyptic number.

It is an amenable number.

406020324420 is an abundant number, since it is smaller than the sum of its proper divisors (865303547580).

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

406020324420 is a wasteful number, since it uses less digits than its factorization.

406020324420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72763545 (or 72763540 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The spelling of 406020324420 in words is "four hundred six billion, twenty million, three hundred twenty-four thousand, four hundred twenty".