421958 has 8 divisors (see below), whose sum is σ = 660528. Its totient is φ = 201784.

The previous prime is 421943. The next prime is 421973. The reversal of 421958 is 859124.

421958 is nontrivially palindromic in base 15.

421958 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (421943) and next prime (421973).

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

It is a self number, because there is not a number n which added to its sum of digits gives 421958.

It is a congruent number.

It is an unprimeable number.

421958 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4541 + ... + 4632.

It is an arithmetic number, because the mean of its divisors is an integer number (82566).

2⁴²¹⁹⁵⁸ is an apocalyptic number.

421958 is a deficient number, since it is larger than the sum of its proper divisors (238570).

421958 is a wasteful number, since it uses less digits than its factorization.

421958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198.

The product of its digits is 2880, while the sum is 29.

The square root of 421958 is about 649.5829431258. The cubic root of 421958 is about 75.0049181960.

The spelling of 421958 in words is "four hundred twenty-one thousand, nine hundred fifty-eight".