321426742 has 32 divisors (see below), whose sum is σ = 594441792. Its totient is φ = 126935424.

The previous prime is 321426731. The next prime is 321426799. The reversal of 321426742 is 247624123.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 136608 + ... + 138940.

It is an arithmetic number, because the mean of its divisors is an integer number (18576306).

Almost surely, 2^321426742 is an apocalyptic number.

321426742 is a deficient number, since it is larger than the sum of its proper divisors (273015050).

321426742 is a wasteful number, since it uses less digits than its factorization.

321426742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112.

The product of its digits is 16128, while the sum is 31.

The square root of 321426742 is about 17928.3781196181. The cubic root of 321426742 is about 685.0054110074.

The spelling of 321426742 in words is "three hundred twenty-one million, four hundred twenty-six thousand, seven hundred forty-two".