320144042021 has 8 divisors (see below), whose sum is σ = 322205486400. Its totient is φ = 318088836000.

The previous prime is 320144042011. The next prime is 320144042081. The reversal of 320144042021 is 120240441023.

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

It is a cyclic number.

It is not a de Polignac number, because 320144042021 - 2³⁴ = 302964172837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320144042011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456601 + ... + 1661918.

It is an arithmetic number, because the mean of its divisors is an integer number (40275685800).

Almost surely, 2^320144042021 is an apocalyptic number.

It is an amenable number.

320144042021 is a deficient number, since it is larger than the sum of its proper divisors (2061444379).

320144042021 is a wasteful number, since it uses less digits than its factorization.

320144042021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119179.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 320144042021 its reverse (120240441023), we get a palindrome (440384483044).

The spelling of 320144042021 in words is "three hundred twenty billion, one hundred forty-four million, forty-two thousand, twenty-one".