321042012 has 24 divisors (see below), whose sum is σ = 788524800. Its totient is φ = 101381616.

The previous prime is 321042011. The next prime is 321042037. The reversal of 321042012 is 210240123.

It is a junction number, because it is equal to n+sod(n) for n = 321041982 and 321042000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321042011) 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, 703812 + ... + 704267.

It is an arithmetic number, because the mean of its divisors is an integer number (32855200).

Almost surely, 2^321042012 is an apocalyptic number.

It is an amenable number.

321042012 is an abundant number, since it is smaller than the sum of its proper divisors (467482788).

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

321042012 is a wasteful number, since it uses less digits than its factorization.

321042012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408105 (or 1408103 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 321042012 is about 17917.6452693985. The cubic root of 321042012 is about 684.7319973844.

Adding to 321042012 its reverse (210240123), we get a palindrome (531282135).

The spelling of 321042012 in words is "three hundred twenty-one million, forty-two thousand, twelve".