321430142 has 32 divisors (see below), whose sum is σ = 548536320. Its totient is φ = 139920480.

The previous prime is 321430141. The next prime is 321430159. The reversal of 321430142 is 241034123.

It is a super-2 number, since 2×321430142² = 206634672372280328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321430141) 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, 79043 + ... + 83009.

It is an arithmetic number, because the mean of its divisors is an integer number (17141760).

Almost surely, 2^321430142 is an apocalyptic number.

321430142 is a deficient number, since it is larger than the sum of its proper divisors (227106178).

321430142 is a wasteful number, since it uses less digits than its factorization.

321430142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 321430142 is about 17928.4729411068. The cubic root of 321430142 is about 685.0078262910.

Adding to 321430142 its reverse (241034123), we get a palindrome (562464265).

The spelling of 321430142 in words is "three hundred twenty-one million, four hundred thirty thousand, one hundred forty-two".