321403402042 has 8 divisors (see below), whose sum is σ = 482762820276. Its totient is φ = 160482461952.

The previous prime is 321403402031. The next prime is 321403402093. The reversal of 321403402042 is 240204304123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 235718989081 + 85684412961 = 485509^2 + 292719^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 321403401998 and 321403402016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109617703 + ... + 109620634.

Almost surely, 2^321403402042 is an apocalyptic number.

321403402042 is a deficient number, since it is larger than the sum of its proper divisors (161359418234).

321403402042 is a wasteful number, since it uses less digits than its factorization.

321403402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219239072.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 321403402042 its reverse (240204304123), we get a palindrome (561607706165).

The spelling of 321403402042 in words is "three hundred twenty-one billion, four hundred three million, four hundred two thousand, forty-two".