421930 has 8 divisors (see below), whose sum is σ = 759492. Its totient is φ = 168768.

The previous prime is 421913. The next prime is 421943. The reversal of 421930 is 39124.

It can be written as a sum of positive squares in 2 ways, for example, as 421201 + 729 = 649^2 + 27^2 .

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 421898 and 421907.

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, 21087 + ... + 21106.

2⁴²¹⁹³⁰ is an apocalyptic number.

421930 is a deficient number, since it is larger than the sum of its proper divisors (337562).

421930 is a wasteful number, since it uses less digits than its factorization.

421930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42200.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 421930 is about 649.5613904782. The cubic root of 421930 is about 75.0032591176.

The spelling of 421930 in words is "four hundred twenty-one thousand, nine hundred thirty".