321242430 has 32 divisors (see below), whose sum is σ = 772272000. Its totient is φ = 85521312.

The previous prime is 321242423. The next prime is 321242431. The reversal of 321242430 is 34242123.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321242397 and 321242406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321242431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9921 + ... + 27219.

It is an arithmetic number, because the mean of its divisors is an integer number (24133500).

Almost surely, 2^321242430 is an apocalyptic number.

321242430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

321242430 is an abundant number, since it is smaller than the sum of its proper divisors (451029570).

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

321242430 is a wasteful number, since it uses less digits than its factorization.

321242430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17928.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 321242430 is about 17923.2371518094. The cubic root of 321242430 is about 684.8744544101.

Adding to 321242430 its reverse (34242123), we get a palindrome (355484553).

The spelling of 321242430 in words is "three hundred twenty-one million, two hundred forty-two thousand, four hundred thirty".