421954 has 8 divisors (see below), whose sum is σ = 681660. Its totient is φ = 194736.

The previous prime is 421943. The next prime is 421973. The reversal of 421954 is 459124.

It can be written as a sum of positive squares in 2 ways, for example, as 416025 + 5929 = 645^2 + 77^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8089 + ... + 8140.

2⁴²¹⁹⁵⁴ is an apocalyptic number.

421954 is a deficient number, since it is larger than the sum of its proper divisors (259706).

421954 is a wasteful number, since it uses less digits than its factorization.

421954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16244.

The product of its digits is 1440, while the sum is 25.

The square root of 421954 is about 649.5798642199. The cubic root of 421954 is about 75.0046811893.

The spelling of 421954 in words is "four hundred twenty-one thousand, nine hundred fifty-four".