320428432842 has 64 divisors (see below), whose sum is σ = 735332542464. Its totient is φ = 91185652800.

The previous prime is 320428432823. The next prime is 320428432861. The reversal of 320428432842 is 248234824023.

It is an interprime number because it is at equal distance from previous prime (320428432823) and next prime (320428432861).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 320428432794 and 320428432803.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57597153 + ... + 57602715.

It is an arithmetic number, because the mean of its divisors is an integer number (11489570976).

Almost surely, 2^320428432842 is an apocalyptic number.

320428432842 is an abundant number, since it is smaller than the sum of its proper divisors (414904109622).

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

320428432842 is a wasteful number, since it uses less digits than its factorization.

320428432842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803.

The product of its (nonzero) digits is 589824, while the sum is 42.

The spelling of 320428432842 in words is "three hundred twenty billion, four hundred twenty-eight million, four hundred thirty-two thousand, eight hundred forty-two".