321542345 has 8 divisors (see below), whose sum is σ = 386964864. Its totient is φ = 256491184.

The previous prime is 321542341. The next prime is 321542357. The reversal of 321542345 is 543245123.

It is a happy number.

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 321542345 - 2² = 321542341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321542341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90929 + ... + 94398.

It is an arithmetic number, because the mean of its divisors is an integer number (48370608).

Almost surely, 2^321542345 is an apocalyptic number.

It is an amenable number.

321542345 is a deficient number, since it is larger than the sum of its proper divisors (65422519).

321542345 is a wasteful number, since it uses less digits than its factorization.

321542345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185679.

The product of its digits is 14400, while the sum is 29.

The square root of 321542345 is about 17931.6018525953. The cubic root of 321542345 is about 685.0875232262.

Adding to 321542345 its reverse (543245123), we get a palindrome (864787468).

The spelling of 321542345 in words is "three hundred twenty-one million, five hundred forty-two thousand, three hundred forty-five".