320162421 has 8 divisors (see below), whose sum is σ = 427488160. Its totient is φ = 213139152.

The previous prime is 320162387. The next prime is 320162471. The reversal of 320162421 is 124261023.

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

It is not a de Polignac number, because 320162421 - 2⁶ = 320162357 is a prime.

It is a super-3 number, since 3×320162421³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320162471) 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, 73135 + ... + 77388.

It is an arithmetic number, because the mean of its divisors is an integer number (53436020).

Almost surely, 2^320162421 is an apocalyptic number.

It is an amenable number.

320162421 is a deficient number, since it is larger than the sum of its proper divisors (107325739).

320162421 is a wasteful number, since it uses less digits than its factorization.

320162421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151235.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 320162421 is about 17893.0830490444. The cubic root of 320162421 is about 684.1060824318.

The spelling of 320162421 in words is "three hundred twenty million, one hundred sixty-two thousand, four hundred twenty-one".