321402434 has 8 divisors (see below), whose sum is σ = 482181120. Its totient is φ = 160675396.

The previous prime is 321402421. The next prime is 321402439. The reversal of 321402434 is 434204123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×321402434² = 206599049162248712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321402439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13247 + ... + 28605.

It is an arithmetic number, because the mean of its divisors is an integer number (60272640).

Almost surely, 2^321402434 is an apocalyptic number.

321402434 is a deficient number, since it is larger than the sum of its proper divisors (160778686).

321402434 is a wasteful number, since it uses less digits than its factorization.

321402434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25824.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 321402434 is about 17927.7001871406. The cubic root of 321402434 is about 684.9881426544.

Adding to 321402434 its reverse (434204123), we get a palindrome (755606557).

The spelling of 321402434 in words is "three hundred twenty-one million, four hundred two thousand, four hundred thirty-four".