321426461 has 4 divisors (see below), whose sum is σ = 322830300. Its totient is φ = 320022624.

The previous prime is 321426433. The next prime is 321426481. The reversal of 321426461 is 164624123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187005625 + 134420836 = 13675^2 + 11594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321426461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321426481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701576 + ... + 702033.

It is an arithmetic number, because the mean of its divisors is an integer number (80707575).

Almost surely, 2^321426461 is an apocalyptic number.

It is an amenable number.

321426461 is a deficient number, since it is larger than the sum of its proper divisors (1403839).

321426461 is a wasteful number, since it uses less digits than its factorization.

321426461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403838.

The product of its digits is 6912, while the sum is 29.

The square root of 321426461 is about 17928.3702828785. The cubic root of 321426461 is about 685.0052113905.

The spelling of 321426461 in words is "three hundred twenty-one million, four hundred twenty-six thousand, four hundred sixty-one".