42021001320 has 64 divisors (see below), whose sum is σ = 126401109120. Its totient is φ = 11175546624.

The previous prime is 42021001289. The next prime is 42021001411. The reversal of 42021001320 is 2310012024.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 42021001320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424644 + ... + 514163.

It is an arithmetic number, because the mean of its divisors is an integer number (1975017330).

Almost surely, 2^42021001320 is an apocalyptic number.

42021001320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42021001320 is an abundant number, since it is smaller than the sum of its proper divisors (84380107800).

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

42021001320 is a wasteful number, since it uses less digits than its factorization.

42021001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939194 (or 939190 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 42021001320 its reverse (2310012024), we get a palindrome (44331013344).

The spelling of 42021001320 in words is "forty-two billion, twenty-one million, one thousand, three hundred twenty".